judging from the first generation of M chips they will be super efficient, and most probably also be very performant. My guess is, that they will compete with workstations as notebooks might be no match. If it outperforms the competition it can be priced accordingly and in contrast to the Mac Pro these Notebooks are (most propably) unreached in performance, therefore I think that the prices are acceptable. It is actually the first time since the old cheese grater that the price seems acceptable for me.
I would love it to be a pc notebook, but never the less I am happy, as competition is good for development. remember the days that intel was lonely on the top of CPU developement. nearly 10 years of near stagnation. Now we have 3 competing CPUs und even 4 competing GPUs with intel and apple also in the game.
I am really eager to see those benchmarks.