Cyric13,
I'd suggest going with the J-hooks. They're easier to conceal than belt loops. Plus, it's easier to put on/off. I have the Blade-Tech IWB's for my SIG P226, P228, & P239. I purchased them with belt loops, but luckily, Blade-Tech offers the J-hooks as an accessory. I really like the holsters but wish I got the J-hooks. Hope that helps.
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"No matter how deadly you may be, you must contain your art within the sphere of good motives against a background of peaceful intentions."
G.M. Ramiro U. Estalilla