Let's get one thing out of the way, guitar players are the best!
Ok, now that we understand this, one must also understand that beer is essential for good music to occur. The best music in history of rock was written and performed drunk and stoned.
That way it's also less dificult to understand why beer is popular in modern times.
If you're looking for fuel for your style you have found a place and a guitar hoodie at the right time.
That can only mean one of the two things, either you tottaly rock, or you're just plain awesome by nature!
Get it and wear it proudly!