I’m using both IKEA and Hue bulbs without having used any of the original apps/hubs (though I do use the deCONZ/Phoscon hub addon, not the Home Assistant ZHA but if you’re device is listed as compatible the experience should be the same.
Edit: apparently you can re-pair without a remote, see below comment: One thing to note about the Hue bulbs (without a Hue hub) is that you need one of the remotes to reset bulbs after already being paired so they can be re-paired to a hub, where as the IKEA only need the power turned off and on a number of times to enter pairing mode.