Yes, I went to an unlisted nearby audiologist who had never heard of IEMs (this was many years ago) and he did my impressions for $25, plus he shipped the impre

Yes, I went to an unlisted nearby audiologist who had never heard of IEMs (this was many years ago) and he did my impressions for $25, plus he shipped the impressions to the IEM manufacturer for me. Based on that experience I would definitely not try to take my own impressions, but leave it to a professional.