I have ridden both Pursuit frames (radical slope and standard design) and Sprint frames extensively on the street. All the sprint bikes I have had (Coppi x 2, Gardin and Rossin) were all steel and very tight geometry wise. Both Coppi's and the Rossin were standard design and had lots of toe overlap and usually around 75 degree H.T. with shorter proportionate top tubes. The Gardin was a severely sloping bike and was terrible on the street. All these bikes were super tight and had a reatively harsh ride for steel owing to how steep and short they were.
The Pursuit style frames I have had (Rossin, G.T. and Winterbourne) all had a more relaxed ride. Both the G.T. (Easton) and Rossin (Dedaccai Aero) were super stiff at the B.B. frames but were much smoother riding on the street. Mostly because the top tubes and front center dimensions were longer. still have a steep H.T. angle but because of the longer top tube, no toe overlap, even with my size 12 canoes and XL toe clips. When I purchased the Winterbourne Custom (Mostly True Temper OX, Columbus stays)I wanted a more T.T. style bike as I find the longer cockpit and lack of any toe overlap friendlier and more comfy for the street.
They are all track bikes. Not a single one has/had a brake hole. They all saw track use and performed fine. Some were better street bikes than others. None had a noticeably shorter lifespan then any of the road or hardtail mtb frames I have put through the same amount of abuse.
Bikes are bikes. The only limitation is how hard you are willing to ride them and the care you put into taking care of them. My $1 and 2 cents.