ISSA - International Slalom Skateboarding Association

yesterday i found something interesting;

http://www.longboard_skating.homestead.com/trackshock.html

...trackshock-trucks, but i think these are built like the v-shockers

Saw these Trucks on
www.latterdayskates.com/trucks.html

Name V-Shocker



I know, that these Trucks are usually used in Dirtboarding, but dit anyone of you ever try them on a longboard / slalomboard?
Once tried them, my first impression was very good, well turning and quite smooth - please correct me when im wrong

Did anyone of you try them before? Are there any different Springs to attach?
I'm very interested in buing them, using it for my longboard,
for verty smooth cruising. But bevor buing, just need to check if they are worth it.

Would be thankfull for EVERY comment to this truck.
Greetz
Simon