I bought a complete set of the synthetic Evah Slaps last week to replace my unwinding 18 month old Velvet Blue, and strung them up before a busy gigging weekend. I was never in love with the Blue the way I was with Animas, but funds were tight and they worked well enough. I did a mixture of amplified and unplugged gigs, and gave the strings a pretty good workout pizz, arco, and slap on the new strings. As a guy who has played pretty much exclusively gut, nylon, and Velvets for the last 5 years, I think these might be the all-arounders I've been looking for.
These strings are very loose, very thick, and very dark, particularly the lowers. They aren't dead like orchestral strings and I can get a little growl from them, but if you are into a bright, modern pizz sound there are better options (like the Blues!) For an old school Leroy Vinniger type tone, or for swing and bluegrass, I think the boom and quicker decay works really well. They weren't as loud or mid-focused as the blues from the drivers seat, but my bandmates all commented on how good the bass sounded, and that it seemed to them I was getting a bigger sound overall. I had used obligatos in the past, and was worried they would kinda "give up" in the same way, but despite the low tension they seem to have the same solid sound the rest of the Evah line does. When I had another bassist play my bass, I found this to be true as well. I also found that they amplify really well with a bridge wing pickup straight into my GK MB150S.
The slap feel and tone is absolutely glorious, and it's clear that Pisatro really put a lot of thought into this aspect. I can play stuff I couldn't play cleanly before, and I'm a pretty advanced slap player. No more of the clankiness from the Velvets, and the smoother wrap is going to be nice for the fingerboard. Nothing is quite as great as plain gut for slap, but for a wrapped string, these are amazing. It has that nice satisfying "clack" as opposed to the "click" you can get from most wrapped strings. A really big upgrade over the nylon innovation slaps and the like, IMHO.
The main reason I pulled the trigger on these as opposed to buying another set of Velvets is that my newish main gig requires a good bit of arco work, and I'm about to start studying with a classical teacher as well. I have never really used a real arco string, but I can tell you that these bow of hell of a lot more consistently than the other slap-able stuff I had used. They don't roll around like the obligatos did, and start in the way you'd expect a steel-wrapped string to start. I'm definitely kind of a hack arco player at the moment, but I'm very happy with these and I'm looking forward to improving on them.
In short, these are the hybrid strings I've been dreaming of. I'll post back if I fall out of love, but for now I'm super stoked to have my string issues settled and focus on music!