Falcon shocks for towing. Any good?

I'll say not enough to cover the cost of the shocks. Plus you would need to enquire how they are valved. In my experience, most off the shelf high $ remote res/rebuildable shocks are designed for quick compliant valving on small bumps and big resistance on ground out type bumps. Aka high speed off road driving.
That said, a properly valved set of big shocks could help.
I just don't see needing to put new shocks on a brand new top of the line pickup to tow a modest load.