I've never heard of "Lesro". The one I'm referring to was a standard one-way that fits XX, XXX-S and XXX-4 models...I think it was "Apex"?
Thye use a standard (5mm?) one-way bearings, instead of the tiny and fragile Losi bearings. The bearings in my Lazer have lasted 2 years...the Losi bearings, maybe 2 heats.
What you're describing sounds like an X-Ray Multi-diff...you can make it into a "one-way spool". Not many people use that configuration in 4wd off-road (never heard of one myself). It's generally either ball diff, spool (solid axle), one-way or (on shaft cars) a center(shaft) one-way or a one-way center pulley in some belt cars, with either a spool or a ball diff.
I love front one-ways myself...great turn in and corner speed...much smoother.