Thanks for your comments guys, much appreciated! I was just after something that replicated the handles on the Warsops i've been using for years.
However, ever the bargain hunter, i picked up a brand new Hell4Leather G2 on eBay (from the very generous simonmay5, who threw in a Safbats bat cover for free) and in an irritating twist, has the smallest, roundest handle i've ever felt!
I've packed it out with strips of grip and tape and feels ok now. Just have to get used to it as the bat is a serious weapon!