That Bull Shadow 2 is pure sex appeal. I’m hoping at some point CZC gets it approved for USPSA Production division like they did the regular Bull Shadow, and also starts making the slide so that it does not require blending the S2’s frame to fit.
I made the transition from irons to RDS last year. Typical story, aging eyes made focusing on the front sight difficult. Prior to that I was an iron sight shooter for a long time. Late-2016 I started to need special glasses to focus on the front sight, which was fine for range or competition, but I came to the realization that I’m not always going to be wearing those glasses for EDC so that spurred me to make the switch. So far I’ve converted three of my pistols to RDS, a P10C with RMR, a Shadow 2 with SRO, and my 1911 Marvel .22 conversion with Vortex Razor that I use for Steel Challenge. Waiting on the release of the Romeo 0 for my 365XL.
As far as transitioning to RDS, on my P10C I opted for BUIS with the rear sight in front of the optic. I did change the front sight’s fiber optic from red to green tube so I could tell the difference from the RMR’s red dot. Initially I did a ton of dry fire to get used to bringing the gun up and having the red dot centered in my line of sight. Having the irons helped and I probably used the front sight as a crutch for the first 10K or so reps. After that it became more natural and now I hardly see the irons.
I did shoot my P10C w/ RMR in Carry Optics division for about 6 months in 2018 and part of 2019. Most dot shooters will tell you they use target-focus for the majority of the shots (focus on the target and pull the trigger when the dot is superimpose on the target). Maybe 5% of the shots (far shots on small targets) I use dot-focus, but by and large shooting a dot for me is both eyes open and target-focused.
FWIW, when shooting iron sights, I engaged close targets using target-focus, but for the most part 15 yds and further I use front sight-focus.
When I set my Shadow 2 up for Carry Optics with the SRO rds I opted to forgo the rear sight and only retained the front sight more out of habit than anything else. I did remove the fiber optic tube because I found it too distracting in the larger window of the SRO. I have considered getting a front sight blank from CGW or maybe even filing down the front post until it’s flush with the top of the slide. But for now unless it catches my support hand when I rack the slide I’ll leave it alone (I find myself using the optic as a slide-racker...).