Operated the F50 in JAA, as far as I can remember all handling (taxi, reject aso) was done by the PF, now on the short bus in FAA. LP taxi and hand on TL durin T/O roll, and takes control for reject and during roll-out. Maybe okay when FO is inexperienced, but I really didn't think it is the best way. I upgraded having almost no taxi experience, got less than 10 sectors of OE/line training, and on my first trip as a captain flew with an FO with less than 200 hours in the aircraft. Don't think he would have been ready if I had headed for the grass! (I wasn't worried because I had close to a decade in the left seat, but we were upgrading people with very little relevant PIC time). Learning how to do everything with a more experienced pilot in the left seat next to you makes more sense than trying to learn with a newbie on your right. The whole argument that you should be experienced in everything by the time you upgrade really doesn't apply if no-one lets FOs taxi or reject.....