I use a Peterson Virtual Strobe tuner with a clip on tuner pickup. It has no issue with the lower strings at all, but for the top two I need to move the clip right onto the tuning peg of the string right below in order to get a good reading.
Hey, Tony, do you have iOS4 installed? I installed the istrobosoft update after that, but the display doesn’t strobe anymore for me, although I can see the numerical readout of how far out the string is. Is it working for you?