I see this once a day. The few folks on the server who know me know that I have quite a passion for rogues. I play my rogue 90% of the time but also capped a cleric to help pay back those folks who let me run with their groups and need a cleric for the next run.
I completely avoid groups that have rogues excluded as DPS even if my rogue is on timer. I don't send the group leaders tells nor do I make a big deal about it; I just ignore it. However, if the group leader sends ME a tell asking to join because they need a healer, I simply reply "I don't heal groups that exclude rogues. Thanks for offering though."
FWIW, the only Shroud I've ever run that killed Arraetrikos in one round (BEFORE the blades got to the melees, in fact) had three rogues in it.