Figured I'd just let people know how the royals have been since I've been skating them for a few months. Overall they're pretty fucking sick, if you want lower trucks I'd seriously recommend these. Only thing that bugged me was the IKP would get loose, but after I tried super glue like someone suggested earlier in this thread the problem resolved. Also, I found the IKP is better for dipped grinds if its a smooth, skatepark ledge/rail. But if it's chunky then yeah it'll hang up more since it's way harder metal. Besides that Everything is good, it turns good, pops good, grinds good. I dunno what else to really say except they're really good trucks.
Side note: I bounced to a pair of worn ATGs I still have since I setup a new board and was curious how they felt after riding the royals and they still felt really good. Basically I'd say go royal if you want a low truck and tensor if you want high. It kinda sounds fucking kooked to say but yeah, tensor and royal skate the best in their respective height categories imo. I kinda wanna try some forged/TI indys later since their height is somewhere in the middle and they have a similar WB apparently.