As always, it depends on your intended use for the gun. If it is just for range/competition use, it could work OK, but you would be compromising a lot of the potential benefits of the RDS sighting system when used for self defense.
First and foremost, having iron sights that cowitness with the red dot is a huge advantage, not only as backups but also for learning to acquire the dot without “hunting” for it.
To do this, the sight needs to be as low as possible to the bore so the BUIS are not ridiculously tall. A sighting system closer to the bore is easier to use. Front and rear sights built into the RDS have such a short sight radius, so high above the bore, that they do not compare in precision or usefulness to traditionally mounted iron sights.
As well, most RDS dovetail plates simply mount the RDS on top of the plate with two screws. Only those two screws are securing the sight to the reciprocating slide. With a machined cut, ledges front and rear secure the sight, which is a much more robust method.
A dove tail mount with an inexpensive RDS will give you about 40% of the true RDS experience. Thus while it is relatively simple and economical (no slide cut) for trying out something new, you will be missing so many advantages that you cannot make a really good comparison between cheap and best.
While the DT system will work to some extent, if you make the decision to ditch it, you may be missing out out on using a significantly better sighting system, if you have self defense requirements.
If you just want to try the RDS system, see if you can rent one or use a buddy’s if you can find one. Fifteen minutes of proper instruction with dry and live firing will get you to the point quickly where you can determine if RDS might be good for you.