Been using ledger for 9 years as well (hledger lately.) Never have a hitch. The only complaint I have is that I can't (easily) keep AR in sync with online invoicing software. minor though. Would love to have some git-style integration with my bank and other accounts. `ledger pull savings` or `ledger pull invoices`
I like that interface idea. There is ledger-autosync (in Debian and on GitHub[0]), which should pull transactions from with accounts with OFX. I haven't tried it as none of my accounts are reachable through OFX.