here is the holster system i am looking at but am thinking shoulder might be better, what do you guys think?

The unique Fobus Roto Holster rotates 360 degrees and adjusts easily for cross-draw, bodyguard/driver/ small-of-the-back, and strong-side carries. Our patented locking adjustment allows the firearm either a forward or reverse cant, with total gun retention. The Roto holster is lightweight, with a flexible two-piece design for maximum strength and all-day comfort. This Roto Holster does extend 1" further out on you belt then the normal Fobus Holsters... So if you want a tight fitting/close to the body Fobus holster go with the regular Fobus holster. Your choice of an easily interchangeable paddle or belt loop attachment is included, and extra attachments are sold separately.
The Roto holster system is available on all current holster models (not available on C2, J357, and is IDPA

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Many go fishing all their lives without knowing that it is not fish they are after.
- Henry David Thoreau