I was worried that I would not like typing on DSA, and ordered the Granite set to see what all the fuss was about.
Then someone mentioned that the uniform profile is like typing on scissor switch keyboards, which I have used extensively, so my hopes for liking them were raised.
When they arrived, I installed them onto a keyboard and started typing.
To me there is not that much profile difference between the rows on a set of Cherry or OEM profile keycaps (unless you count placing top and middle row keycaps next to each other). For most purposes Cherry and OEM are mostly flat to me.
DSA seemed the same, only slightly more so.
They are not the same as typing on scissor switches, as scissor switch keycaps are completely flat and, at least on the Apple aluminium keyboard, depress almost to the level of the plate.
DSA are narrower at the top than the base, and to me that makes a significant difference when typing on them, in contradistinction to the shape of scissor switch keycaps.
I quite liked DSA, and did not have any problems typing on them, except for one - for a while now I have been actually growing my finger nails, and I found that they seemed to catch on the keycaps far more than on Cherry or OEM profile keycaps. Whether I was over-compensating for the completely uniform height, or whether I was trying to treat the keycaps like scissor switch keycaps (completely flat on top), I don't know.
After a few months I removed them and went back to OEM profile.
I have no plans to sell my DSA Granite set, and will probably try them again at some stage, but on switches other than MX green.
I have not tried SA - my first SA set, Nuclear Data Green, is either in the post at the moment or not far off.