The biggest problem was it was very difficult, even then, to find duty holsters for a 5". Four and six inch in both K and N were plentiful. So, I tinkered around with 4" and 6" guns and amassed a collection of holsters for them
Funny you should mention that, the Kramer holster that I've been using with my 4" N-Frames actually came from a used holster bin at the LGS (and cost me a whopping $6). While it works great for the 4" guns, it was actually made for a 5" model and, as such, fits the M27 perfectly.