I've played live with drummers on click tracks (when necessary because of a backing track) and I'll record to click tracks 100% of times in a studio. A drummer with solid tempo can play comfortably to a click track and even introduce some mood to it (holding back parts or making them sound heavier i.e.), even if he/she seldom does it or even the first time he/she faces click track. OTOH somebody with bad tempo (internally arrhytmic) may spend decades playing to click tracks and still sound clumsy. Sorry to be this conclusive about it but I've experienced it many times: THERE'S NO SUCH THING AS LEARNING GOOD TEMPO, you either have it or you better find anything else besides music to do. It's like tone deafness, no cure to it (don't let Anthony Kiedis fool you, tone deaf people fronting big touring bands are an exception, positions are established as a result of long time friendship, not talent or -in this case- the minimal necessary skills -and don't get me started about John Rookieante-).