To just go a little on/off topic
I have tried the K dot and thats a wonderfull scope for the money
I use a Zeiss varipoint now (1.1-4) and that scope is expensive but worth all the money and i will never in my life sell it.
I have looked at the Leupold but i think its worthless for ipsc ,in clear daylight you just will not see any illumination of the reticle and that will slow you down at close targets (just my opinion)
Eo tech ? i have one ...its nice but the lens always looks misty I will trust my nice clear aimpoint anytime over the Eotech
have not tried the magnifier yet.
I also have a TA11 and use it with a flip cover closed at the front for close targets(prec.mach.tool comp) and you can do wonderfull things with that clear scope.(downside....the donut is rather big for large distance targets,i think)
I do think you can shoot just as well and fast irons as optics,but i just do not have the time to put in the effort,it just takes alot of practice