I have been using bitcoin only software on  my Trezors for years now.  It works fine without adding attack vectors that other coin software may add  ----- > since I am not storing those on my hardware wallets.

I still scratch a "tin foil hat tingling" at the thought of a secure element lacking full open source observation.  Sure the software is going to remain open source, but a bad actor using a proprietary secure element has options "behind the curtain".  [popcorn]