because a guitar's notes are fixed due to the frets...they are always out of tune with themselves in respect to voice leading and chords and stuff. when i pay attention to it...(especially when i play one) it drives me completely nuts...infinitely more so than a piano...
and yes, using a tuner just makes it even worse.
of course a single note will be out of tune with itself if all the strings aren't precisely in tune with one another...
using a tuner won't make them preceisely in tune...
no self-respecting string player uses a tuner and you certainly can't even come remotely close to tuning a piano properly using one...
regarding the wolf tones on the violin...well you can tame it by playing the darn note every day...not only will that help but you'll also discover a way to bow and vibrato it so that it will be passable. you could also put your shoulder into the body to supress the vibration...
in any case, if there's going to be a wolf on the violin, yeah it'll be up there on the g.
in terms of construction...the biggest difference between a guitar and a violin...no not the f-holes, not the sound post, etc.
guitar = flat top and bottom... violin = arched...
it makes the construction of the violin monumentally more challenging.
regarding the guitarist-> just because you can mix-and-match different gauges together doesn't mean you should...
in the end he should just use one set....
anyways...