Yeah that is possible. The algorithm in 1.0 does not really guarantee any changes, so it's possible that only few players are swapped. But no longer, because here is version 1.1
Changes:
FIX: Fixed bug where config file would not be loaded on server startup.
FIX: Players are no longer moved to spectator first.
NEW: Added convar to choose trigger words. Done to avoid conflicts with other plugins.
NEW: Added HUN translation (thanks to KhyrOO).
NEW: Added POL translation (thanks to Zuko).
NEW: Added event handling for changes in convar values.
NEW: Performance of scramble is logged (as in, amount of players swapped).
NEW: Added a new (better) algorithm for scrambling
I've edited the topic start to include upgrade instructions. basically you need to upload the new version and optionally set the sm_scramble_words convar to your liking. Also, the scramble will now guarantee that a minimum amount of players will be swapped to the other team.