1. As long as i took care of my accounts, none of them have been banned. Only once i started saying "fuck it" and went full suicide one or another one got banned.
2. Yes, used my fisher for 99 on RS3 and 81 on osrs. A yet unpublished construction bot for 99 on rs3, my runespan bot for 99 runecrafting, teak crystallizer for 99 woodcutting, curly roots bot for 99 firemaking, and quite a few more bots that i only wrote for my own needs.
3. Almost maxed on RS3, not really interested in OSRS, so irrelevant question for me.