N
nicebutdim
They aren't interchangeable blades, they are a full set of screwdrivers.
I've a set of Wera with interchangeable blades that I next to never use, and the Armeg Torque Screwdriver has interchangeable blades that isnext to never usedused when required.
If you need a PZ1, PZ2 and a 4.0mm flat head I find nothing more convenient than taking those 3 screwdrivers with you, rather than a set of interchangeable ones where you are constantly changing between them.
Sorry, thought you were on the subject of interchangeable stuff, for which blades are even easier to lose than complete drivers.
I like the idea of having drivers to hand, but find competition for pocket space pretty tight. Blades take up little room and a couple of extras can save climbing up & down or walking back & forth.
I call this the Holy Trinity of drivers that live in my pouch all the time. All other drivers live in the side of my bag.
I tend to find PH2, 5.5 flat and 4.0 flat the most used, but often need a bigger flathead and small terminal blade. Also handy being able to carry +/-, hex and torx blades, on those occasions when they're needed.