Hi, I think its a very good combination to be honest, nice control and a lot of spin. The thing is, any time you change equipment it takes a bit of time to be really used to and totally comfortable with your new set up and make the adjustments on all your shots consistently. I think this is even more pronounced with dignics as you do have to work with the rubber a bit more as you mentioned. Long term I think you will get more quality on your shots if you stick with it for longer.
If in the future you then feel like you still want or need a bit more speed then you could think about the viscaria. But I believe if you focus on being relaxed as you contact the ball and get a good acceleration through your shots you will start to see the extra quality that dignics can give you with time.
If you have any other questions of course just let us know 🙂
Cheers, Tom
