i have done it that way...only because i didnt have any beads at the time to put in the back. didnt really feel to confident setup like that so it only lasted a couple drifts before i took it off. so i didnt notice what the action of the worm was like.

i dont drift with worms to often, i have only hooked one fish drifting a PW. so my confidence level is super low. BUT give me a flow and ill fish PW's all day long. actually did all day today on the snoqualmie for that matter.