I think it's ok to use that 'ugly' command line internally if there's a need for it.
which raises the next question: is this something useful to do?
on one hand,
* a 'regular' wow64 session will add the default 64 modules used in wow64 (not very interesting) * it's a bit more verbose
on the other hand,
* under new wow setup, it would show the ELF/Mach-O modules (which could be in some cases of interest) for a 32bit debuggee (info that we loose compared to old wow) * under old & new wow setup, it would show if using modules from different machine (in the bug report you're referring to, a 64bit process is making use of a 32bit DLL)
since this command is used to get a grasp of context where a crash occurred, I'm rather a bit inclined towards the option of adding it.