Having played Sekope, I came up against this when in my 20's against black sanc at Empire.

Did the healer make it harder? Certainly!
Did the healer make it impossible? Definitely not!
Did the healer extend my sweet skills learns on the vanquisher? Hell Yeah!

If I could do it solo in my 20's then its completely possible. Most certainly possible with some persistence. I personally don't have any issues with it, further to this time things right, cat and mouse things a bit and you can even pick off some of the lowbie defenders.