People are gonna tell you no. That Spe really hurts since this isn't Brave. Even if you're not investing in Spe, you now lose Spe tying other uninvested 90s and such.
There are perfect Adamant Groudon for free on the site, so it makes more sense to get one of those than keep resetting. I kno some people are into having only their OTs, but that doesn't actually matter. You don't even see it in battle, and unless you're constantly looking at the summary page for it you'll prolly even forget it isn't yours. The only change is that you get more XP from battle with a different OT.