As you say yourself, it is 100% Trezor inside, and the only thing that is different is the design of the case which they claim was made of "aerospace grade titanium". You use that HW just like any other Trezor, and if you trust the Trezor, there's no reason to doubt the Corazon that was made in collaboration with Gray&Trezor.

The only small problem may be the price ranging from at least $1000 all the way up to $2000 for the gold version. In fact, the real question is not whether someone should trust this device - but whether it makes sense to pay so much for it.