Which competitor device are you referring to? I thought all these on-the-club devices depended on where the clubface is pointing at address for their definition of the target line....I'm curious now, how else would they know where the target is? That's what the new Swingbyte ITR feature addresses.
Precise alignment of the Swingbyte on the shaft is crucial but I find it easy to look down the shaft and align it with the club face grooves. The new version is supposed to have an alignment aid that makes this easier still. The main issue up to now has been maintaining the position of the device on the shaft during the swing...the new attachment design appears to address this, plus they say no weight has been added.