Yep, have the core exp on my KTM XC300 and it's been a great addition. Went trail riding in Colorado last year and I was SO glad to have it! Made steep/rocky downhills a piece of cake as I never needed to worry about the clutch and could just concentrate on the brakes and throttle.
I can still bump start mine if necessary...with the hydraulic clutch on the KTM the Rekluse kit includes an adjustment screw that when adjusted all the way in will allow the bike to bump start as usual.
If you look around they can be found for less than full retail...got mine for 700.00 and have since seen them for less.