Hi,
I Just finsihed a game on POTD with eder, pallegina and kana in my team, all using sword and shield. I'm by no mean an expert, so you'll probably get better answers soon:)
I would advice not to bother with modals to increase your engagement count, just pick hold the line and use shatterstar as a weapon. With sword and shield and superior deflection, he will be fine for tanking. Later pick triggered immunity. Apart from that, weapon focus/mastery and disciplined barrage work well. If you set his AI to aggressive/aggressive, he will be a decent contributor to your overall damage output with low micro. I would also suggest charge when available : it increases his fun factor by a lot:)
With three SnS guys, you can have 3 shields with the herald enchantment during the end game, using the dupication box. With a priest and a cipher, you become invulnerable after a couple of buffs
