i'm using it with medium format at the moment. here's my regime.
pyrocat hd (metol, no pot bromide) 1:1:250 30 minutes 23deg
constant agitation for the first minute then 10 inv every 5 minutes
i'm printing on a diffusion head at grade 3 ( ilford mgfb in replenished dektol )
my main interest is micro contrast ( increased local contrast ). sharpness is a bonus.