I think you covered most of it. You have to understand that the tobacco prohibitionist have been waging a decades long campaign of misinformation on oral tobacco. Check out these sites to get an idea of what the real story is
Tobacco Truth
Tobaccoharmreduction.org
I'm not going to say oral tobacco is risk free, but it is greatly reduced compared to smoking. I'm also not going to defend american oral tobacco. It certainly is a good deal less risky the smoking, but Swedish snus is the least risky, so why mess with anything else. All the evidence (and there's lots of it) points to snus being at least 98% less harmful then smoking.
They have been unable to link any risk of oral cancer with snus, while american style snuff may have a slight risk. Looking at it another way, if PV's aren't working for you the danger of smoking is many times more harmful then snus. We also know the long term affects of snus, while we don't know what decades of inhaling PG or VG, along with flavorings will be. The evidence points to very low risk, but just saying.
There is some risk of gum recession, but the worst appears to be from loose snus. Buy a good electric toothbrush (I use a sonicare) floss, and change up where you place the portion and the problems should minimal at worst. Overall oral problems with snus are a good deal less then with smoking.
You can keep your teeth, but don't tell OTD that.