Thank you for the infos. I read a bit about Rogues in DnD at high level and most comments usually are quite positive, but it's hard to see for me what could be probably transferred to BG3. I also played a bit more with Rogue and already noticed the harsh punishment of misses with Sneak Attack (and I'm playing without Karmic Dice and miss a lot more so) and that it's much better to have another melee char in the party. Does not fit very well with my usual group of Shadowheart, Gale and Wyll. As for the poisons, where exactly do purple worms live in Faerun ...?
