As far as the cylindrical play, the bushings I have would spin on the pins and not the races when they got dry. So I fail to see the difference since I did not loctite the pins to the bushings.
I loctited mine to the pins per Tom Cutter's instructions.
The main complaint I have with the JL bushings is that they reused the factory pins rather than design their own with the bushing installed as an interference fit. My one pin was worn as my OEM inner race was turning on the pin also due to the notching of the race transferring torque to the race.
I think the JL approach, if better implemented, would be the ideal solution. Use a custom pin so the bushing can be wider with more bearing surface, use temperature difference during assembly for an interference fit to the pin and install a means for greasing as with the Beemershop solution.
I like most of what I see with that solution, but I believe, assuming it isn't tapered, that it is not the right design for this load condition. The BMW tapered roller bearings would be fine if properly sized. I believe they were sized for a rotating load, not a cyclic load. Time will tell. I hope it works as the price is competitive and the greasing feature is very smart.
As a point of comparison, I just replaced the bearings in my front load washer. The spacing of the bearings is probably 4-5" or fairly close to the paralever bearings. The load has a longer moment arm, probably 14-16" compared to maybe 7-8" on the paralever, but the static load is dramatically lower. I would guess maybe 30 lbs with a full load of wet clothes compared to probably 800 lbs or more on a gross weight LT. The washer probably sees much higher loads when imbalance is factored in, but I doubt the load exceeds 300 lbs. If these guesstimates are even close, that would put similar loads on the bearings, not counting impact loads on the LT which could easily double the 800 lb static load. The difference? The bearings in the washing machine are at least twice the size of the BMW bearings and probably close to 3x the size.
I can't find the size into and I threw away the Nachi boxes, but I think one was 30mm ID and the other 35mm ID. And both bearings and the seal were $75 with free shipping. I believe the BMW bearings are undersized for the LT. Might have been fine on a 500 lb bike, but I suspect still marginal for a cyclic application such as in the paralever. If they were twice as big, I bet we'd not be having this discussion.