I think that loading a trike is actually easier...
Since you have three separate wheel-tracks: you can used your additional ramps to raise exactly what needs raising!
Since I back my Spyder in: I use my ramps on the front wheels. It raises them up so that the approach angle issues disappear, and they keep the front of the bike elevated almost to the top of the Outlaw's ramp. so the breakover angle is also greatly reduced.