All I can say is: do it!
I bought the road/traveller pack from MyAstroShop, as well.
If you can, see if you can get the polar scope. It's expensive, but, within 5 minutes of setting up, you can do 15 minute exposures at 17mm without any evidence of trailing.
My only gripe is the load that it can handle. Those of us with big cameras (full frame systems) are limited to probably about the EF 135mm f/2L USM as being the maximum weight. But, this is OK; it wasn't designed to be a replacement for an equatorial mount or something like an Astrotrac/Starlapse.
So far, I've only used it with the EF 17-40mm f/4L USM, EF 50mm f/1.8 II and EF 85mm f/1.8 USM. No dramas.
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