I do use straps for shrugs (over 365) and SLDLs (<5 reps) just because I think a mixed grip on those can cause some twisting/torsion in your hips. And if you're prone to hip problems (like me) it will cause problems down the road. Otherwise I stay away from them on everything else. I even feel like a homo using them on that stuff, but I have to.
Another thing to consider. Find a guy at your gym who uses straps on everything and another who doesn't and compare their forearms. Nothing builds solid forearms like holding a heavy barbell. Not that bodybuilding, forearm 'belly' crap. I'm talking solid, strong forearms.
Glad to see you trying some chalk.