This is a good idea. Top end damage is only useful for burst, and skills that scale with weapon damage. You only have CS that scales with weapon damage, and that's very mediocre anyways. And str scales better (dodge or parry, can't remember which, haven't played prot in a long time) than stam for prot, and the proc may end up giving you more dps in the long run since your damage comes from AS and Judgement anyways.
Now, I haz question. I'm working on a resto druid (LAWL I NO) now that my Shaman is done other than DPR. I'm sure this question is really really dumb to most, but why do people use the Preened Ironfeather Breastplates and Shoulders over the Mystical Pauldrons of Elements? Only reason I can see is that you can't equip them because they don't change into leather, but that almost doesn't make sense. Only reason I ask is because Blizzard likes to be obnoxious with these types of things. Same stats, more armor if you CAN use them.
EDIT: Also, Adal. If the proc scales with the SP you get based on strength, then it's a better item hands down. Don't think it will, but it's something to check out.