The last time I looked at the Summoner was when they first came out and sucked. No quirks, no pod space, fixed JJ, horrible hardpoint placement. However I still loved them as the Hellbringer and especially Summoner (Thor) are my favorite clan mechs. I recently returned to MWO and discovered the incredible quirks the Summoners got, including the infamos -C variant (Mechwarrior Horse's personal favorite, if read books...). -30% UAC jam chance! -20% ballistic cooldown! The 8-Pc bonus is incredible! This is the mech I was terrified of running into in MW3 campaign when the Summoner-C leaps out of underground facility and UAC20's your face off. This is how I would maximize the armor and ammunition. Rely on that gun arm specifically to rack up incredible damage and hardly ever jam. Use your excellent mobility and jump jets (don't bother speccing into speed tweak or JJ in skills though) to dance around the battlefield.