The 'new' (I don't know if they really are) wallclimbers- like Supersimple 2.3.2 Wallclimber and ILikeClimbing or whatever are extremely detectable. Do NOT use these on live servers, as you get your last warning (I hadn't been warned before) and a 72 Hour Suspension. After that, the ban-beam is coming!!!
So take my advice and don't use them. These are detectable by the warden.dll, not just players who ticket you. Seriously, think about it before you lose your '0h-s0-1337-ch@rz.'