Yeah, but i asked the question and then answered it myself based on the reply i got :p
Considering there are spritesheets and one wouldnt Need to draw new sprites entirely, but just alter a few existing ones, i believe the effort wouldnt be thaaat big after all. After all, you would just take a female sprite sheet and make it appear a bit more bulky, i.e. add some Pixels to each Frame of the sprite.
However, ist still too much time for a rather "minor" Thing gameplay-wise.
However, creating only 2 to 3 new male sprites with inventory Icons wouldnt really be a "huge" Problem unless im missing a vital part of the effort. Creating 20 of them, sure, would be a big Job, but still if you have 2 or 3 done, every one after will just require minor alterations. Some new Color here, some new bulky mass there.