It is uncommon in more than just Neander circles. I have even looked for them at more than one supplier of fasteners.
The arbitrator of this might be Dr. Google. Two searches:
> 1/4-28 bolt < brought up five hits:
1:4-28 Bolt.jpg
> 1/4-24 bolt < brought up 381,000 hits:
1:4-24 bolt.jpg
Just for fun a search was done on the most common 1/4" bolt, the 1/4-20, it garnered 495,000 hits.
The Google search on the 1/4-28 bolt doesn't actually produce sources for the fasteners.
It is an odd duck, just like many other thread forms Stanley used over the years.
I do know some are available and used in some places. They do not appear to be commonly used.
jtk