note there may be tax-implications .... as an IP broker (also covering IP-backed loans) I'm required to be registered as financial advisor in some jurisdictions, so granting equity may be complicated down the track because it should be equivalent to getting paid (for service), deducting tax on the net after costs (intro-fee, travel, hotels, meeting rooms, lawyer services for changing term sheet & compliance, registering agreement if security needed), then purchasing the startup shares at current valuation (or discounted if want to adjust for taxes).
Also depending on jurisdiction I'd check out a decent securities lawyer because institutions such as SEC take a very dim view of fly-by-night procurers.
Lawrence