I was inspired to use the awlpike by some ATS users who I've seen use it with great effectiveness.
It is useful in cav-infested maps so you aren't dead weight against the swarms of cavalry, and to support infantry in situations where you and your 1h will only crowd space/get teamwounded. You stop the cav with the awlpike, switch to your 1h weapon while possibly shielding their stab/slash, then slash the horse's head.
I have 1 wpf in polearm, and it is perfectly usable in those situations. The new patch really increased its upkeep (and low wpf means increased breaking frequency), so it's a lot more situational now.
In general, if you have extra slots, it's definitely helpful to have a cheap secondary weapon for niche uses. Some people recommend an axe to deal with other shielders, or a long weapon in conjunction with a short+powerful weapon. 1h has more options in this regard (if you aren't hybridizing ranged).
Thanks for the compliment, I'm only an okay player at the moment.