Can you wear the AirPod Pros without the rubber tips?

Yes, you can. Although, not wearing the silicone tips will affect the noise cancelling seal.

Hey there mikeyz23,

Thanks for reaching out to Apple Support Communities. I understand you want to know the AirPods Pro without the tips. I’ll be happy to help with this.

The AirPods Pro come with three sizes of silicone ear tips so you can find the best one for you and it is designed to be used with the ear tips. You can use the Fit Test if you're not sure that you're using the best ear tips for your ears though. Take a look at this article for more info:

Choose the size of your AirPods Pro ear tips for the best sound

Cheers.