I haven't heard of anyone using Lubriderm on MJs.... I've used it on my bbags and have had great results, but have always used Apple Garde on my MJs. I always thought Lubriderm was preferred for bbags because it thickens up the leather a bit and helps clear out veins.... MJ doesn't have any veins or thinning or dulling of the leather, so I wouldn't have thought to use it on soft calf bags. I think Apple Garde is better for MJ overall, since it's made specifically for leather. MJ leather is durable and doesn't seem to need Lubriderm.
if anyone is brave enough to try, let me know how it works out!