[Ramirez_the_Silvite]

nope
A few reasons why
1.) Bomys get fast swim
2.) Bomys get pearl diving
3.) Too hard to do, not impossible but will take awhile
4.) We need differences from humans and bomys, without them, what would be the point of choosing them?

ok, I see your point with 3 and 4, but what does getting Fast Swim and Pearl Diving have to do with hats? It's not like Bomys having hats would give us any type of advantage. Hats are just for looks.