If I can make up the armor loss of dropping pinpoint I'd probably switch to reactive Armor. The main reason I use pinpoint is because EA pushes me over the breakeven point against RD. It only give me like 1260 armor but that ends up being 75k EHP, or about 16% less damage taken.
Personally, I do feel a difference when not using Energy Armor as I feel a little bit more squishy. I do however, run with SA every now and then to change things up, but I always go back to Energy Armor - Pinpoint Barrier.
why not just go blood magic with your ls weapon? that's as tanky as archon can get against RD
I do use BM with LS weapon, but without the 1200 extra armor I lose life against RD which is a big difference than gaining life against them. I really could use some AR or armor on my gloves but the crafting RNG gods haven't been smiling on me as of late.