Custom percussion staves

[ebenezer]

Hello everyone,

I have noticed that use of a custom percussion staff is different from the manner in which one of the pre-defined percussion staves is used:

partBongo = \new DrumStaff \with {
  drumStyleTable = #bongos-style
} \staffBongo

... compared to ...

partPercCustom = \new DrumStaff \with {
  % -- drumStyleTable = #defPercCustom  % -- this doesn't work
} <<
  \set DrumStaff.drumStyleTable = #(alist->hash-table defPercCustom)  % -- works this way
>>

Is this just the way it is, or am I missing something?

Thank you.