Re: Thinking of separating my holdings into two physical locations.
You are very lucky to have some local merchants accepting Bitcoin. They accept payments with 0 confirmations or they are using LN?
Bit of both. And although full RBF is now making zero confirmations transactions less safe to accept, I've already spoken to the ones I shop at regularly and they've all said they will have no problem continuing to accept zero confirmation transactions from me since I've shopped with them for years and they know me. Such is the benefit of using small family owned merchants over national or multinational retailers.If you need to receive or send funds to an exchange or a gambling site $100 won't be enough for example. Personally I don't think it's very safe to use his cold wallet for doing all his transactions, but I understand people could do the opposite, especially if they don't use LN.
I very much use this mobile wallet as an "in person spending" wallet. If I was topic up an account on a website or similar, then that would probably come from hardware wallet.must be nice not having to depend on banks. no one to try and mess with your money. but i guess you can't really survive with out a bank account can you? is that really feasible? you heard what happened with usdc right? and how that bank went under but got bailed out...you always said you didn't trust usdc so that was pretty smart. 
I have a regular job which pays me in USD so yeah, I do still have a bank account and I couldn't (yet!) live without one. I also have plenty of bills which must be paid in USD. Small steps, though. 
And yeah, I don't trust any centralized (un)stablecoin. They are all fractional reserve scams, just like fiat itself.What is the name of the app on your phone?
I use Electrum.