I got my 150 mm wheel nordic skates, however I have some doubts if they are better than Powerslide Metropolis SUV. Haven't tested them yet since I am curing my broken rib ( broken when skate kiting actually ). I think they are too low and on bumpy fields and it is not going to work. There is also 57 cm between axis and I am afraid , being now more aware of possible injuries, that they are dangerous for my knees. Inspired by one skate kiter who created insanely safe system ( below) I am designing my own skates based on four 6 1/4" wheels. I think I will still use original powerslide boots not ski bindings like he did, but they are going to be shorter and higher, designed for all bumpy fields. The project of my 4mm alu skids for CNC cutting is almost ready ! Some fine-tuning is still necessary.