No worries, personally I’d prefer the wallet-cover but the silicon goes for now at least as I will use the cover as fingerprints are VERY easily left on any part of the phone. Compared to my Xperia 10 II, this one is indeed bigger so my thumbs have some adjusting to do. The volume buttons are rather stiff, good that they have left a hole for the power button - much nicer to access that one.
On the software side there’s quite a lot to say but that’s a different discussion (Feedback on Jolla C2).