I did have a quick practice down the club last night both with my HW75 and HW45.
On 'low-power' mode the HW45 shot some decent groups and weren't much smaller than the groups I shot with the HW75
I tend to use the HW45 on 'full power' for plinking using a 'two-handed' grip at 10M and when I used the 'one handed target stance' last night, the groups moved over to the right by about 2" or so - not surprising really
I'll keep an eye out for a 'target' style recoiling pistol to use in the MPL, but I think, for my introduction for this series I'll start softly with my HW75