The component of the ERGIC membrane consisting of the gene products and protein complexes having either part of their peptide sequence embedded in the hydrophobic region of the membrane or some other covalently attached group such as a GPI anchor that is similarly embedded in the membrane. [ http://www.ncbi.nlm.nih.gov/pubmed/24119662 http://www.ncbi.nlm.nih.gov/pubmed/16038056 ]