Sounds like a cool option!
Iām not an expert on cold wallets but the 2 concerns I see right now are:
Reliance on centralized software, if the wallet can only be used through one centralized software and that software is compromised then it could be a problem.
Seed phrases being cracked by computing, as computing gets better I feel like it may be able to crack these shorter seed phrases (12 words) and get into wallets.
Iām sure there are some other concerns that I should be aware of but those are the 2 that come to mind.