After reading
@cremaley's post, I thought I'd throw in my $.02 here.
First off, I'm a big fan of green and red dot sights. I have them on pretty much all of my favorite range guns, and even my bedside Sig P365. They're great for someone like me with great distance vision, but less than perfect shorter range vision, which makes for a blurry front sight picture (as is the case with the OP).
I bought the Viridian green dot for my BG 2.0, and as expected, found that my accuracy improved quite a bit vs. my XS iron sights, which I also really like. I modified my pocket holster to fit the new green dot, and found that I could still pretty easily fit everything in my pocket, and was able to draw the gun without a problem.
As much as I like(d) the green dot, I ended up taking it off of the gun, and have pretty much decided I won't be using it. The reason? While it's great for range use, I found that I couldn't seem to acquire a sight picture, consistently, in an acceptable period of time. And I practiced quite a bit with this combo. This was a deal killer for me. I want to be able to, within a second or two max, lock onto my target in a defensive life-or-death scenario, which is what I expect from this gun.
I've gone back to using my laser, which also allows me to also have my XS sights mounted as a backup (unlike with the green dot mounted). I find shooting with the laser, that I'm just as accurate, if not more so, than with the green dot.
So if you're counting on your BG 2.0 as your primary CCW, I would recommend you keep this in mind. Don't just assume that because the green dot is fun and improves accuracy at the range, that it will also be your best choice for your carry gun.
YMMV
Frank