I also have Raynaud's syndrome and the heated grips help a lot but weren't enough for me. I have the Honda ST1300 grips on my FJR and they get plenty hot! I added the Vstrom handguard and this made a big difference because they block the cold air blast onto the hands. I still get some whiteness on some fingers, but not that painfull feeling. I ride year 'round - even in temps down into the 20's and this setup works pretty good.I had the OEM heated grips installed about a month ago. I have Renauld's Syndrome, in which cold weather makes my fingertips and toes turn white and get painful. On the plus side, that gets me out of shoveling snow. The downside is riding in cool weather.
The grips make a huge difference for me. For some reason, my left thumbtip still gets cold. Am thinking of adding a gloveliner on that side.
You'll be happy you purchased the heated grips. There's so much blood circulating through the surface of your palms and fingers that keeping them warm does an amazing job of helping warm you all over.
One thing I've found is that I must be carefull to keep my hands warm before I ride off. If I start with cold hands, they'll never warm up on the ride unless it gets really warm outside.
BTW, I've thought about heated gloves but didn't want to hassle with cords. Now I see that Gerbing has developed lithium ion battery powered gloves that are self contained. I'm going to get a pair of their "snow glove" heated gloves for general use when they get some back in stock. If you don't mind camo, they have those in stock for $20 less. I might even try them on the bike, although they won't offer the crash protection that my Alpinestar gloves provide.