Holster for multiple K frames?

[no.5enfield]

I'm looking for an OWB holster that I can carry my short K frames in. I have a 3" Model 10, 3" Model 65 and a 2.75" 66-8. I have a holster given to me by a THR member for my Model 10, but the 66-8 won't fit with it's underlug. I would be happy with one of Rob's Simply Rugged Sourdoughs, but I'm not sure it will fit my needs. Will a holster for the 2.75" 66 have enough length for a 3" gun?

 

[Pudge]

I got a Simply Rugged for, I believe, a 4" GP100. It works well for a 3" K frame. Top belt slit goes over the cylinder, whole trigger guard is covered