Used to think detailing shears were a waste of money
I cut hair for five years with just my main pair and thinning scissors. A buddy let me try his detailers on a tough cowlick. The control was unreal, way better for fine work around the ears. Now I keep a pair on my station every day. That one try sold me completely.
Yeah, a bad line-up can ruin a whole cut for me too. It's why the right tools aren't just for pros, they make a real difference. How often does your guy change his blades?