Apple Aperture in Sierra 10.12.3:

Since a Google searching the above terms turns up nothing, I thought I;d report what I've observed so far:

I just installed Sierra 10.12.3 on my late-2015 5K Core i7 iMac (40GB/500GB) with no other apps installed. I re-downloaded and opened Aperture 3.6 and it crashed during an SD-card import. Later, I opened Aperture and imported some files from its internal SSD. So far, no crashes. I haven't yet tried opening any libraries created in earlier OSs to see if the metadata bug still crashes 10.12.3. Since Aperture seems to be running without any noticeable anomalies (thumbnails are correct, full-screen toggling works, etc.), I may forstall my conversion to Photos.

One really poor implementation with Photos' defaults: The lack of being able to set a default aspect ratio when cropping is really unforgivable, Apple, even in a consumer app (setting "freeform" as the default will only solicit increasingly horrible cropping decisions by neophyte photographers). Also, pressing the 'Z' key no longer zooms-in to 100% no matter where the slider is set (it did in El Capitan). Okay, Photos rant over. On the plus side, Photos is really beautiful to look at, but the disappearance of keyboard shortcuts hinders those in a hurry to get their work done. Okay, sorry about that last one.

Anyone else using Aperture 3.6 on recent-generation iMacs in Sierra 10.12.3?