I found pask to be disappointing.
at this point value, the carapace armour will fail you. when you don't need it, you'll wish you'd spent the points elsewhere...when you do, something else will immediately AP it out and you'll feel robbed (too much ap-4. cover is more valuable).
Punisher is great....till you hit advantageous cover (Kroot/Pathfinders) or space marines...even pask doesn't compensate for it at that point.
(and it looked so good on paper, I wrecked a perfectly good LR converting one....much unhappiness ensued) Basic stripped russ is better for this.
Last play on that point level (in an escalation league)
I didn't lose a game with this
Command
(2x melta/1x hvyFlm)+ Chimera 145
Vets
(2x melta/1x flamer)+ Chimera 150
Vets
(2x melta/1x flamer)+ Chimera 150
Vets
(2x melta/1x flamer)+ Chimera 150
Vendetta 130
and 25(ish) points to play with...
it's vet spam,
it's melta spam,
and it's gitty...but in a tourney it should work.
I also played replacing the last vet squad with a stripped russ and it worked well.
(whoops, crazy got to some of my stuff first)