Streamlight protac 2aaa with 10440's

Hey guys And gals new to the forum but not light and batteries.
A little background, I'm am an avid Rc car guy so I am very familiar with lipos and have extensive knowledge in that area. I am also an avid shooter with many weapons lights mounted on my firearms.
I have a few surefires, and Streamlights on said firearms.
i have been carrying a sure fire with an 18650 for a long time, but I have been wanting some smaller to carry and after a little research I decided on the Streamlight protac 2aaa. I love the light, it's perfect size and weight for everyday carry and with a $25 price tag it's hard to wrong. But after carrying a 600 lumen light the 80 from the protac is a wee bit low.
So I was thinking about throwing 2 10440 in it.
I know the higher voltage is going to cause a lot more heat and I will have to watch the low voltage of the batteries, but will they fry the bulb. At double the voltage I'm sure I would be happy with the output, I just don't want the cook the little guy.
What do you guys think?

Heh, I'm usually the first one to throw an 10440 in an AAA light, and even I wouldn't do that for a 2xAAA light. But as a geek, I'm curious if would actually work. Seems like with 2x10440 it would be a bit much.

When I was a kid in the 70's, my friend had a model train controller that had a dial for DC voltage. When the adults weren't around, we used to hook random electronic components and slowly dial up the voltage to see at which voltage they melt/explode, and we were surprised by how much components like LEDs would take.

But I did put a 10440 in a brand new I3S yesterday, right out of the box.

Well if I could find a 2 x 10440 run in parallel that would be ideal. My soldering skills are top notch and even I don't think I can get it tight enough to fit in such a thin barrel.
Any feedback or idea would be greatly appreciated.