I've been using the SportTube double for about 4 years now. Considering some of the dings the case has taken, I'm VERY glad I have it. It's worth it when it comes to protecting a few grand worth of equipment. The first year I had it, I did have an issue where one of the wheels fell off while I was rolling it around the airport, but luckily I found all the pieces and put some threadlock on the nut when I got home.
I have put two pair of moden skis with lifter in it, and it works fine, just a bit of coersion to get everything in there. With only one pair, you can just put them in the case in their normal base-to-base configuration. With my small skis (I have a pair of 150's), it's great, because the case slides together and compresses to the size of a golf bag case.
I think a little hassle of working the skis into the case is well worth the added protection. For the pin issue, I took an appropriate size machine screw and drilled a hole in the end of it and put a round "key chain" through it. You can by something similar in Home Depot for about $2.
I also like the fact that I know my poles won't get torn up.
By the way, I once had two pairs of skis destroyed by United Airlines in Utah, when they apparently dragged the bag across the tarmac at high speed and ground the ends of 4 skis off, melted the bases and made the edges turn all sorts of pretty colors. They "repaired" one pair and wouldn't do anything for the other pair. The hassle alone of dealing with the airlines is worth the price of the case.