well im just trying to figure out what to do if in 10 years from now trust & coinomi are gone (I know this sounds crazy) I would have to use that tool to sweep my private addresses into a new wallet. correct?
Doesn't or didn't Trust Wallet or the Coinomi wallet provide you with a seed phrase during the onboarding process? That's the information you need to recover your coins. Just recover your seed in a different multi-currency wallet (if it has to be multi-currency) or download separate software wallets for each coin that you have and recover from seed. Make sure you take note of the derivation paths that Coinomi and Trust wallet use. Always deal with Bitcoin first and move that to a safe location before dealing with any less-valuable alts.