Does anyone have any experience with the Digital Speedo by Zippers? You know,the one that plugs in directly in lieu of the H-D item.It gives revs,afr's,engine temps;all sorts of interesting things. I'm interested to know if it has a GLASS face,or if the speedo face is open.ie;exposed to the elements.Because it uses a touch screen to change speedo variables,i'm left wondering how it would do that through a glass face. Any info would be a help. Thanks guys.