Personally, I would be happy with the creature even if the weapon is wielded at its fingertips. At the worst, I could create a special weapon or object for it to wield, with an offset centre to correct for the attachment point offset. After all, I would want to give this unique creature a unique weapon anyway.
In that case, I'll then consider that the attachment points are good enough and start exporting the animations.
Almost done. I lost a lot of time getting the aarakocra wings main skeleton match follow its counterpart in the aarakocra skeleton (since the wings are a separate model), not mentioning real life busier than usual this first quarter, but hopefully I'll make quicker progress now.