Filtering included resources

We have a use-case where it would be useful to apply filters to the included resources.

Dummy example:

class UserResource < JSONAPI::Resource
  has_many :socks
  has_many :shoes
end
class SockResource < JSONAPI::Resource
  has_one :user
  filter :in_use
end
class ShoeResource < JSONAPI::Resource
  has_one :user
  filter :in_use
end

Individually, one can filter the shoes and socks
/shoes?filter[in_use]=true
/socks?filter[in_use]=true

I was wondering if it would be possible to filter the shoes and socks when included with the User?

e.g. To get the user, and the shoes and socks he currently has in use, something like:

/users/1?include=shoes,socks&filter[shoes][in_use]=true&filter[socks][in_use]=true

Is this in the scope of jsonapi-resources? or would it be best to find a custom approach?

Start with the UserResource, SockResource, and ShoeResource examples and verify how the shown include and filter query parameters are currently interpreted. Determine whether filtering included resources is supported; done means a documented supported behavior with coverage, or a clear conclusion that a custom approach is required.