I LOVE how they're trolling Factor logo & paint schemes.
The RS1 looks like various workswell / yishun / lightcarbon models, it's for sure OEM.
The SL1 could be a VB 177, bearing in mind VB is a broker, not a factory. It looks similar, but slightly different, for eg, to a long teng 266.
I dont follow gravel much.
Those boutique brands are basically a scam, it's incredible.