I'm also considering a pair of SST 8's but I am concerned about the durability and the design. The idea of wholly interchangeable soles and heels (i.e. from left to righthanded or vice-versa) actually seems very lame to me, and I am concerned that the feel of these shoes will be compromised by this design. On the plus side, they look pretty cool, and while it may seem kinda silly I do like to have stylish shoes. ;-)
I currently have SST 6's but they feel like they might need replacing soon. To be honest, I've never really liked the Dexter heels and soles apart from ONE heel and ONE sole, and even with the heel I had to apply teflon tape to the horseshoe tips to allow for the correct braking. Nonetheless, since I am now used to this, I am reluctant to try a different brand shoe. Also, I wear a wide width, which pretty much rules out the 3G option.
Anyway, any SST 8 wearers out there who have any more feedback on these shoes? Is there anything that would make the SST 8's slide differently than the SST 6's (apart from the buckskin #8 sole vs. the microfiber #8 sole, which I already know about)?