Excellent.

Just to add my non-scientific and purely anecdotal testimony: I have been logging most of my miles on 23mm GP4000s tires on A23 rims with occasional rides on 25mm GP 4 Seasons on Mavic CXP rims, both at 90/100 psi for 180lb me. Last weekend I got out my climbing wheels which have IRD Cadence (Kinlin) rims mounted with 23mm Pro 3 Races at 100/110 psi. Some of the roads I was on had some sandy dust on them and on more than one occasion while climbing I broke the rear loose. This left me feeling not so confident on descents which I took very slowly. I have not been on the same roads with these conditions with my regular wheel/tire sets so this info is essentially useless.