Say I have a device that is mostly offline, with a SPV on it.
Say once in a while (for instance once a week) I go online for about 20 minutes, and make a large number of transactions (which are based on transactions I might have received while I was offline).
How long, would you say, does a SPV (e.g., BitcoinJ, bitc or others) need, upon getting online, to be fully operational in these circumstances?
I confess: I am not yet familiar with SPVs (although I did read about them, I have not had time to fully understand them yet). The steps a SPV follows to sync are outlined here, but no timeline is given.