Not much use to you, but, I have most of the metal Wolf's head figures from Conquest and a few Footsore medievals. I took them out to photograph for you as they looked fairly similar in height and bulk, then realised that the Conquest ones are meant to be on slotta bases (I'd based them on normal 25mm round bases by a fairly long winded method. So whatever comparison photos I took wouldn't be right. Personally I think they'll still match up fairly well if you just use the issued slotta base.