This is one of those cases where I needed to match a style of portrait that I took several years before. Luckily, I meticulously measure the position of my equipment, flash power and camera settings for every job I do. That way if an office manager says "we need a photo of our new doctor and we want it to look JUST LIKE the ones you took 2 years ago, I can do it.
I have even kept old studio flash sets due to recurring jobs... even though I have much more capable and expensive gear now. The bottom line is that it is faster for me to set up the old stuff instead of recalibrate a previous setup with new gear. You can decide for yourself if that makes me smart or lazy.
