Sure, they do! ...and then they run back into their demesnes and wait patiently. (Urazial does it daily.)

Druids, do, however, occasionally, maybe, get jumped.

That's not quite jumping people. That's simply baiting.

However, the suggestion that a melder ought to learn to fight without the use of a guildskill is fairly indicative of the flaw in the class. Mages, at least, can and do make a viable go of it because illusions/psionics beats the heck out totems/runes,dreamweaving, or ecology.