To be honest,I have considered it.While the damage of guns did seem low in it's own right,I thought it would be interesting to try.My findings on that though:

While the 0.6 multiplier from using 2 foci

**should** not kick in,and thus 1 foci

**should** function at 100% instead of 60% in terms of properties,it becomes much harder to

-critcap the foci that's left (at 23% 6 ccms are required,so the foci in question would have to have 2x ele,2x ccms

**and** be a Glyph for efficiency)

-Even if it's done,no room is left for cdb unless it's also on the foci.But now we're considering the perfect Glyph,which will be incredibly hard to come by.

Then the 2nd hand will not provide added properties to the spells.Namely:

-4 fewer slots for possible +radius mods for Catas or wherever else,and/or

-a minimum of 16 (property) and 12 (4x 3% mods),thus 28% total ele damage will be lost from spells.In terms of max potential loss,this can be well over 29 (2x ele,1x ele + debuff property) and 16 (4x 4% mods),thus 45% ele damage.That's a tremendous loss by itself.

And to top it all off,the 909s' damage output doesn't seem to be worth the sacrifice.I'll admit I haven't tried a critcapped,2x ele one to be entirely fair on the comparison,but for the most part it didn't seem an optimal choice.

Of course if one wants to go that route,I'll be more than interested in more extensive research than my own