It makes a hell of a difference trust me! I started riding about 12 years ago on a modded mountain bike and moved onto what was at the time a trials specific frame (Heavy Tools Trials) which I rebuilt with modern parts (fixed hub, FFW, etc...) at the start of last year. After a few months of living with my rebuilt bike I got offered a Zona Zenith on here cheap which I couldn't refuse so snapped it up, swapped all my bits over and the difference was unbelievable. Everything felt easier to do, it's hard to explain really but you could really tell the difference even just trackstanding. I won't say people should go out and buy a trials bike if they want to learn trials as it's not true, I learnt it on a regular bike, but I will say that should you buy a bike with trials specific geometry you will notice a difference in how fast you progress.