Yeah I'm definitely going to be watching this one closely. If they add features like only vibrate on the SIP (and not just when SIP active, like ONLY on the SIP area, if possible) and program application exceptions this app would be perfect. This one is going on my regular apps list.
Been playing with it all night now since I read this post and I'm LOVING it. Not once have I felt the vibration effects to be random or delayed or anything. I do notice what I said about the start menu happening generally on almost any menu, like the vibration stab is a tad longer when opening the start menu and clicking on anyting within it or on menus popped up through soft keys or the Opera Toolbar, etc...