I just got this crank for my hill climb build (live in the UK) and have to say overall very impressed with the weight (322g without spider, going to use dm 1x chainring) and the machining/feel of the product. To me this and the rockbros crank look the same but you can clearly see this looks different (although similar) to the Cybrei crank. Wouldn't surprise me to learn they took "inspiration" from the cybrei and the rockbros and lexon are made in the same factory. Still waiting for the bb to arrive so will give an update when i've used it out on the road.
Also I used an old shimano 20 spline bb tool which worked fine for me.