I've got a piece that currently has "+5 strength, +3 Strong Base SA, Break block chance +15%." Yes, it has a Break Block change, which is kick ass... unfortunately I really dont think I'm proud of my DE's productivity:
http://goallineblitz.com/game/player.pl?player_id=791377HOWEVER, he does get a decent number of hurries. He got 3 in our last game, albeit the team had a mediocre record:
http://goallineblitz.com/game/replay.pl?game_id=601665&pbp_id=12621772 (@ LDE vs. lvl 54 ROT - pushes both HB and ROT?)
http://goallineblitz.com/game/replay.pl?game_id=601665&pbp_id=12622615 (@ RDE)
http://goallineblitz.com/game/replay.pl?game_id=601665&pbp_id=12623893 (@ RDE vs. lvl 56 LOT - breaks LOT?)
I dont think strength-based DE's w/ Strong Base are great for sacks; however, they're great for hurries because they collapse the pocket by pushing the defender/s into the QB. This makes the QB paranoid, forcing the throw. It works better when the strength DE is a 2nd stringer, since he will be paired against weaker leveled and or exhausted players.
So to answer your question, yea I think it works, but dont expect sacks with them. Expect hurries.
Edit: And no I never read prior topics on the SA. The above is just my first-hand experience with it.