I use a safepack when hiking, the one I have is a goverment model size, it will hold most 5" autos, the 454 alaskan will just barely fit as well. Very discrete, but like noted above, who cares. It also offers awesome retention. I have tumbled my dumb azz down the mountian due to a miss-step, everything stayed in there just fine, so be it I felt like crap the next day from it.
I also have a simply rugged holster and purchased a chesty puller rig for it for chest mount. Again very nice setup, however... you know you are carrying a big piece of steel on your chest. Also it "can" interfere with some packs.
Last option is the Kifaru Koala. Not only does it carry the alaskan just fine, it also carries my essentials/ possibilites equipment. Using it with the X harness makes it VERY comfortable and it still allows unobstructied use and draw even when wearing one of my bigger packs like the EMR. I also found that you can toss on the koala and then the E&E for day rides on quads/ bikes with minimal bulk yest everything is still readily avaliable. Here is my 454 in the Koala for comparision.
Here is the 454 is the safepacker hanging from the ridgeline on the hennessy hammock during a nap. I have since modified the safepacker with 550 loops so it hangs sideways to how it is shown, this way it is easier for draw, which hopefully I never need to pull ANY firearm in defense.