HP 41 Catalog implementation

[Siegfried]

While the HP41 CATALOG function may probably be called revolutionary for its time (as the whole machine) I am curious why there is no way to use/execute a function when browsing the catalog. It wouldn't seem too far-fetched to allow using e.g. XEQ while stepping through a catalog to execute the "current" function.

I'm still very new to HP41 operation and wonder if there are any known or suspected design considerations that would make this impractical or downright stupid.