which wheels are you running on the Seven?I have Paragons on my Seven, and have been thinking of doing the 135 to 142 swap, but for the time being I'm making do with a DT Swiss 10mm ratcheting skewer on a 135mm hub.
The Paragon sliders allow for lots of different configurations on the same frame. I've been very happy with them.
The hubs are Chris King, which is the main reason that I've not converted to 15 & 12mm through axles. Changing King hubs over to through axles requires new hub axles and end clamps, so it's not a cheap proposition.which wheels are you running on the Seven?