A little known fact is that PUP is just as effective as BST in dynamis. With /THF sub and tarutaru sash, PUP has TH3. Your JA procs you say? No problem. PUP can spam WS procs faster than a /DNC can spam JA procs. How, you ask? Flashbulb, Strobe, and Disruptor all count as weaponskills. Strobe and Flashbulb each have a 30 second recast time and are used independantly, and Disruptor will automatically be used if the mob has any sort of buff (protect, shell) or uses a buff weaponskill (berserk, etc.). This, along with your TP and your automaton's TP, makes proccing WS as easy as JA. Another plus? No competition. Everyone and their mom will be hogging the JA proc camps while you're all alone doing WS.
Pros of PUP in dynamis:
*Great survivability with no downside
*TH3 with THF sub and sash
*Risk-free easy statue kills with puppet
*Less competiton
*Survivability not dependant on subjob. Soulsoother puppet will keep you healed with no downtime and infinite MP, as well as Protect and Shell
*Fast kills. PUP has access to some of the strongest weaponskills (lolpup all you like, a properly geared PUP's stringing pummel/shijin spiral/victory smite is nothing to scoff at, especially on weak trashy dynamis mobs) as well being able to use your pet's TP for stronger weaponskills compared to BST who whose pets have weak weaponskills. Puppet will spam Dia 2.
*Easy weaponskill procs. Strobe, Flashbulb, Disruptor and two TP pools make this faster than JA procs.
*Does not need to use TP to heal or do damageless procs (steps, flourish)
*Want to try for white procs? No problem! Your pet has no subjob. You can still easily do statues. Survability isn't compromised. Unlike BST, you don't lose your best procs or your ability to heal.
*Unlike any melee job, you still have the ability to proc magic if you so choose (even though it's a low chance, it's at least possible)
*High evasion skill, plus evasion bonus IV without a sub (one tier lower than THF main)
*Status effects? Not a problem. Your puppet has 500 means to instantly remove them, even the nasty ones like petrify. You won't be paralyzed from Healing Waltz or waste TP.
*Auto-haste. Your puppet will relentlessly haste you once it wears.
*No money spent on jug pets. This means a higher return on the money you get from currency for your time spent. No ammunition or tools, except the occasional automaton oil if needed.
Cons:
*Unless you sub DNC and lose TH3 (TH1 only with sash), you will have absolutely no JA procs except steal/mug. This isn't a problem because JA procs will not be your focus.
*No native sneak or invisible (except Hide with /THF)
*Obviously leveling the job and getting it up to speed isn't as easy as perle BST, because your puppet needs attachments to be effective