Take a look at the Hume 715 OT, I purchased the model for the 3913 and it fits my 908 like a glove, and the price was great too, a well made quality holster. Also any holster for the 39 series will work as well for the 908. I got mine from Gunners Alley great guys, very helpful.
Don Hume Clip-On Inside The Waistband Holster (H715M-WC)