Regarding the line in the trivia section, the plant tucked into the belt on the Choir set looks more like a sprig of mistletoe than it does of rosemary.
perhaps the most interesting thing about this weapon is that the maiden it refers to is ebrietas
something very few people know about is that ebrietas' theme actually has lyrics (theyre in latin but latin is still translatable), which directly quote the quote in the rosmarinus' description
A shame that this and the Flamesprayer can't stagger in any way. It is almost impossible to use it longer than two seconds against most enemies because of the delay and slowed movement so it would have been nice if it could stagger like other firearms or the Flamesprayers of the church enemies.
A fun trivia that this weapon does that you didn't add, if you hold down the trigger and let Rosmarinus continue to spray it will start to make an echoing noise like a choir singing.
Flamesprayer is literally just a better version of this. You get earlier and it deals damage more effectively to more common enemies. If you’re gonna run an arcane build, just use the flamesprayer.
The Rosmarinus is a complimentary weapon to the Flamesprayer, with pure Arcane and a bonus stacking effect on certain foes (might be all at different rates). It's slightly better for Chalice bosses (since Watchdog and Keeper have pretty high Flame Resistances, and the Pthumerians are SUPER weak to it), plus foes that pack low Arcane Defenses.