What so many seem to have forgotten is that replacing a pair of top end bodies and top of the range lenses, 14-24, 24-70 and 70-200 with their mirrorless equivalents isn't cheap (2x bodies, grips and the lenses £10,000) trading in my SLR kit might net £2,500. In theory there is a mount adaptor but I am not sure it works well with the grip, certainly the tripod bush on the adaptor is unusable with a grip on the camera. Simply, the advantages of switching don't, for me, amount to £7,500 (there aren't the used lenses around yet to soften that bit). I doubt I am alone in finding that I simply cannot afford to move to mirrorless. The only secondhand kit available doesn't meet my requirements and new kit is either too expensive or unavailable (not yet produced). The SLR won't leave the hands of the enthusiast on a budget until the used market in mirrorless gets filled with desirable toys. As I said the Z8/9 (I don't know what the designation will be) hasn't been finalised yet, give it two upgrades and I might be able to buy one at a price I find acceptable. OK so I am unusual but the same will be true at other points in the range, simply the mirrorless market in Canon and Nikon kit isn't yet mature enough to allow people to switch.