I do always carry my Mojo with me so might give them a bit of a test before my impressions. Judging from what other people with W60s have said it is a similar sound signature but just more detailed and extended in high and low frequency so I have very little doubt that I won't like them.
I wasn't expecting it to hurt but I don't think I would ever let anyone syringed my ears. My dad had that once and they popped his ear drum and it got infected; from what he said it was one of the most excruciating pains he has ever had and it lasted over a month, pass thanks!
You won't have any kind of problem with an experienced audiologist.