If you want someone to eat a chargeset, sure, that's a great idea. Or if you get first hit, open with lag like bash, trip, and work into flurry if your ripostes are doing solid damage.
chargeset is a great counter for blocking the first hit, but switching to swords could also get you into trouble if you're fighting a warrior who has the Space legacy.
So it all depends on who you are fighting, if you know they are going to try and open with something chargeset will trigger on (like cranial or other skills, maybe ambush), and it also matters WHERE you are.
If you're in the Inn with a polearm, you're in trouble because of how chargeset mechanics work. Chargeset technically acts like an opening attack even if you're not the one initiating in the Inn. Protip- don't have a polearm wielded in the Inn because if chargeset triggers the guards will aggro onto YOU.
If you're an imperial and you're at centurions, you've got a great chance at removing any hope of fleeing if you initiate with a polearm - cutoff coupled with centurions blocking - parting blow hits.
Also, if you're fighting someone super squishy - swords, bash, flurry burst damage, and most of the time they're dead if you're putting out solid DEMO DEV damage. 8 hits can equal 800 damage.
Using a weapon your adversary is vulnerable to is one of the greatest advantages to winning PvP fights. Trapping works even better when the heavy weapon you wield hits a vuln.