I love the strap too and I'm currently trading in my GH Work for a GH Part-time. I love the style of this bag with Giant Hardware.....it's classy and edgy all at the same time. I prefer it over the City with GH. The size of the PT is plenty big enough to pull off the giant hardware and it really makes this bag visually appealing.......it somehow balances it. The size is plenty big for my daily essentials and I love that I can wear it all different ways depending on my mood or needs. With the shoulder strap, you can wear it either crossbody or on the shoulder. With the handles, it can be a handheld or they can also fit over the shoulder like the Work. I think the PT is a great size for you.
Over the past few months, I've sold two of my Giant PT's and I really miss them. Plus seeing this photo the other day didn't help any!
Now, I've got two PT's on the way!!!! One in RH and the other with GH and I'm thrilled. Good luck with your decision.