Sadly am a rug racer - no permanent track - but am setting one up in the kitchen tonight to have a play (10' x 5' to play with, and enough curves of varying radii to allow me to cram as much track into the space as possible).
I set up an oval in the living room last night just fer ****s n' giggles - you DO have to lean them - noticable speed improvement when you get it right. If you lean wrong way into a corner the rear gets no traction and it just stops with the rear spinning on the spot... go too fast and they fly out of the slot like a rocket. If you don't lean and just keep them upright, noticably slow, at a guess mainly due to lack of traction from rubber slicks directly on the metal rails vs mag strength, but lean em just slightly off so the rear hits textured plastic and they don't `arf shift it some! If I can slacken the front yoke off on each, then they'd probably even counter-steer like a proper bike as you drop them into the bends.
Main discovery thus far is the magnets are vicious, and positioned just behind the guide. It's strong enough to stop it on the plastic centers of changeover sections unless attacking flat out... so they need adjusting. Fortunately these Bycmo bikes have adjustable mags - two screws raise or lower the mag.
The motors sound fairly rough, but that'll be the linkage to the back wheel... and there's a high pitched whine from the separate motor that handles the leaning that could get annoying after a while. The roughness kinda suits them tho.
The detail in the models is great, and build quality feels quite good. Can't imagine chipping one for digi unfortunately - don't think there's space in there unless you could embed the chip into the rider, but he already acts as a cover for existing circuitry. As they're 1/24, they tower over my Scaley cars... not sure my flyover supports will go high enough!
They come with controller adapters to cover all brands of track too which is quite handy.