Not had any experience of good surfing wetsuits in a long time but the neoprene of swimming wetsuits has a rubberised coating over it's entirety to allow it to glide smoothly through the water, whereas most of the surfing suits I've seen have had the slightly more "fabricy" textured neoprene on the surface.
A friend of mine did the Henley Classic in a diving wetsuit but I'm not sure I'd recommend it.
Not had any experience of good surfing wetsuits in a long time but the neoprene of swimming wetsuits has a rubberised coating over it's entirety to allow it to glide smoothly through the water, whereas most of the surfing suits I've seen have had the slightly more "fabricy" textured neoprene on the surface.
A friend of mine did the Henley Classic in a diving wetsuit but I'm not sure I'd recommend it.