RE: MRP's okay post workout?
in theory an MRP is maltodextrin and whey in most cases, this would be good in water PWO for those who are not too concerned about carb intake PWO (ie on limited cutting cals) although my only issue with MRPs is the ratio of pro to carbs
if this ratio fits in with the diet, i dont see why not if you are unable to take stanard wheywithout carbs or with dextrose/banana
wont be the end of the world IMO
maltodextrin has a GI of 150 according to many sources, which should be sufficient to promote an insulin spike if you require one