I have a set of GHS Pressure Wounds on my Jazz Bass and they're great all around string. I don't do much slap either, mostly fingerstyle. I wouldn't say they're the best choice for slap style but there are guys here who do use them that way.
As you can see on the brightness scale the Pressure Wounds are a fairly mellow string. GHS Progressives might be more to your liking if you want an alloy string that's a little bit brighter. If not then the Pressure Wounds sound terrific on a Jazz Bass.
GHS Bass String Brightness Scale: