Well i have a lvl 52 rdm ... and i have actually been asked to "jump on in" and start hacking into the mob with my weapon . I really don't mind because everytime i join a party i make it painfully clear what i will and will not be doing (only because sometimes people get confused on who is doing what ... turns into drama and we loose precious killing time) . i don't think its a noobish thing to do (well if you have a 41 + Rdm and still try to melee even though nobody asked you to (or you shirk your rdm duties to melee) then i have to ask how the hell you got to that lvl) .
At any rate, if i am not main healing or nuking i would be willing throw up stone skin , phlanx and/or blink , refresh , haste , and en-something ... its not that much more difficult to refresh the party from there also its (for me) easier to see the mob cast buffs on themself so i can dispel (because when i usualy play i have to keep the sound off, and sometimes the words go by way too fast >.< ) . Either way its up to the leader of the pt and somehow it works out ... so i don't throw stones at my taru house of glass