Physical Bowzon + dual wield lawbringer merc act5, viable in hell?

my 2c: i only play online, but ~3 player count is no problem for a sub-optimised phy bowa with act5 merc.

i'm currently Terror-zoning with the following:
GENERAL SETUP:
phy bowa with Strafe (multi to clear crowds), sorry.
Harmony in Great Bow; Hysteria armor; WAR TRAVS boot; BLOOD AMMY +2, faster r/w; RING1: RAVENFROST; RING2: Carrion Wind; Goldwrap Belt; DRACS gloves; titan revenge+ Stormshield on switch; CHARMS anni+helltorch (both far from perf rolls) + phy renewed sunder (omg, shit rolls), life+resist charms to get Cap on light+fire res.

When Herald packs spawn, i head back to TOWN, switch in Windforce ( Shael), GORERIDERS, G-FACE with +15ias/13 all res... and I find I Strafe just to proc the LIFETAP, then switch to MULTI.

Act 5 Frenzy MERC wears VAMPGAZE Helm, Fortitude armor; Crescent Moon in Eth Mythical Sword; Mania in crescent Blade. I've actually used STRENGTH ( Amn + Tir) in Phase Blade in place of Mania vs HERALDS and did quite well, slowly trading for the Kingslayer upgrade but I don't want to pay up lol.

The thing about Brand for procs is that it isn't on striking but on being struck which shouldn't really happen. So the only way to proc it off that is by going suicidal and getting yourself punched a lot.

Dual Lawbringer wouldn't give you 66% though. Lawbringer gives you a 20% chance on striking (only for that weapon). So 20% per hit. If you count a " Frenzy cycle" as 1 hit instead of 2 then you're effectively looking at a 1-(0.8*0.8) = 36% proc chance per double-swing when dual-wielding them.

If you don't have access to WF and are really strapped for runes, you might be surprised by how well Mania works. It obviously isn't quite comparable to WF or Faith and makes you even more reliant on the rest of your gear as a result as phys dmg dealers typically simply don't perform too well in general without at least some amount of proper gear, ideally including the weapon, but it does still work to start out with.

Personally, I much prefer an A2 dual-aura merc (might/Pride) since clearing ends up too fast for merc procs to ever truly matter. But that's coming from a full BiS perspective. At the lower end of the gearing cycle, it might indeed be worth looking into a decrep/amp proc merc, be that with dual Lawbringer, reaper's or Dreadfang. Though in the case of A5 mercs the problem is that their Taunt and whatnot overwrite curses on select targets. And you don't get a free aura on top. I'd hence go with A2 might/reaper's instead, if you have access to that.

As for Strafe, it is situationally significantly more performant than multishot (and vice versa) but you don't have to use it by any means if you don't like it. MS/GA alone still works fine.