iPad Air 2024 Accessory info and sourcing

Joining the dots...

The Zagg is a premium screen protector product; its cost reflects the advanced materials and manufacturing process that produces a very thin and structurally very strong toughened glass laminate. Screen protectors are not all equal - either in materials or manufacturing quality.

Unlike cheaper products, the Zagg will not compromise finger-touch sensitivity, or affect functionality of the Apple Pencil where used. The screen protector is fully compatible with Apple's Magic Keyboard for iPad.

If for any reason you experience any difficulties with the Zagg screen protector, or if you suffer breakage for any reason, you have benefit of Zagg's lifetime guarantee which will offers free replacement or refund.

While the above sounds like a sales-pitch - it is not intended as such. It is, however, an accurate description and assessment of precisely what you get. Having personally used a variety of iPad screen protectors from various manufacturers, I can honestly say that Zagg is by far the best of those that I have used bar none.

Whether you use a screen protector or not is largely personal choice - but consider that your iPad screen is the single most expensive component of your iPad. The screen protector is a sacrificial layer that, unlike the iPad screen, is relatively cheap to replace if damage should occur. A good quality screen protector will not affect any iPad functionality, whereas cheaper alternatives may cause issues - and will not provide the same degree of physical protection.

The choice is entirely yours to make. Experiment with cheap alternatives if you choose - but be prepared to encounter problems and potential disappointment.

You asked for a proven source/vendor. You received a recommendation - along with a comprehensive explanation as to why you might consider its benefit.

Moving to your supplementary question regarding hubs...

Many USB-C hubs will work well with your iPad Pro. However, you should only consider hubs that align with your iPad's own capabilities. For example, a USB-C Hub that itself supports connection of multiple monitors (when used with an appropriate host computer) will only support one monitor when used with iPad - as the iPad Pro only supports a single external monitor of up to 6K resolution.

There are many USB Hubs that have a USB-C connection for iPad plus a USB-C PD (Power Delivery) pass-through power connector to which you can connect your USB-C Power Adapter - along with the hub itself incorporating a combination of additional USB-C ports, USB 2.0/3.1 Type-A ports, Ethernet LAN, HDMI, VGA, SD and microSD card-readers - in in some cases, a 3.5mm analog audio/headphone jack.

Perhaps consider Kingston, Anker, Hyperdrive and Satechi - although there are many others from which to choose. A Google Search for USB-C Hubs compatible with iPad will find a number of articles and recommendations.  When selecting a USB-C hub, you would be best advised to select a hub with specifications that explicitly list support for iPad Pro.

Arguably the two best screen protector manufacturers for iPad are Zagg and OtterBox.

Zagg back their screen protectors with a lifetime warranty.

I'll decline to offer comment or advice as to suitability of the Magic Keyboard vs third-party combo options...

I look for something more substantial in protecting the iPad Pro itself - in particular the otherwise exposed edges. By personal preference, I use an OtterBox case to protect the high-value iPad Pro, this precluding the use of a combo case/keyboard. The case (without keyboard) facilitates portability and use anywhere as I don't require a stable surface upon which the use the iPad Magic Keyboard.

When at my desk, I use the iPad with an external monitor, bluetooth keyboard and Apple Magic TrackPad. When using the iPad elsewhere, I prefer using the iPad without a cumbersome keyboard.

My preferences don't necessarily reflect your own usage needs.