My SL-X will be 2 years old in March, i have one from the original batch. I have used it at least 5 days of the week, apart from a few weeks holiday. I use it for near on all of my work and it has never let me down. It went back to Gardiners for a service after about 10 months, they fitted a new top clamp and sent it back. As for wear, it still looks good to me. I give the clamps (bicycle ones)a tweek every morning and they last all day. The Gardiners logo is still visible on the base section, and the red markers are also still visible. I changed the pole hose about 2 weeks ago, just because i had loads in the unit, and the end cap along with the tennis balls. Now i think my pole has been very very good value for money.
My guys have a new 30ft SL-X each, and we have changed the clamps twice, then upgraded them to the newer stronger ones. We have stripped the poles down twice as the clamp glue has come away and they have had to be re-glued. The top two sections of the poles do seem to be wearing quite quickly, and the sticky marker tape has come away. All three poles get flushed through at the end of the week, and the pole hose is always wiped when being put back in the van. Imo, the original poles were/are a better pole, the clamps are much better (i know many moaned about them) they are stronger than the plastic ones. I know we have discussed this here before but i think the carbon quality is a lot better on the original (i may be wrong, i am only a window cleaner), in fact my original and the latest version feel like two very different poles. If mine packed up tomorrow, i think i would probably buy another, just because of the great service that we have always had at Gardiners, but then again, i may just give the Glyder a try?