There is some controversy about seasoning before freezing. Some people think it adversely affects the flavors of food, that salt changes the texture of meat, and I don't know what else. However, I am a sous vider and I love the convenience of being able to throw seasoned frozen food straight into a sous vide pot rather than open it, season it, and re-seal it to cook, so I've gotten into the habit of seasoning pretty much everything before freezing. I love it so much I've started to do it with steaks for the grill, too.
I've found that you DO need less seasoning, at least for meat. This is especially true if you use a small amount of oil or liquid in the bag. The vacuum pulls the liquid throughout the bag and helps it really get into the meat to flavor it, not unlike a marinade. I use just a small sprinkling of salt, am slightly more liberal with other spices, and use about a teaspoon of olive oil when I freeze steaks. We do a reverse sear on the BGE and they are almost always spectacular.
I've been meaning to experiment with salted-before-freezing vs. salted-after-freezing to see if I can really detect a difference, but I haven't gotten around to it. (There hasn't really been a reason to, I guess.) If anybody has or knows of anybody who has, I'd be interested to hear the results.
BTW Darth, that's a nice sealer. I love love love my vacuum sealer! I haven't kept track of how much it's saved me over the years, but I know it's substantially more than what I paid for it. Have fun!