Do reviewers of research proposals for a fellowship read the whole application, or only the scientific part?
From my experience, reviewers get the whole proposal and also read the whole proposal. Reviewers try to get a complete picture of the applicant and skim the proposal for all relevant information in this regard. This means, that probably no reviewer will read every word of the proposal, but potentially, every word will be read by some reviewer. The reviewers base their review on the whole picture they get, but usually their feedback is only for the part for which they are specialists (e.g. the scientific strength of the applicant and so on…).