[myrroddin]

Here's how I did it, using non-Ace3 speak:

local MyAddOn = ...
local eventFrame = CreateFrame("Frame")
eventFrame:RegisterEvent("PLAYER_LOGIN")
eventFrame:RegisterEvent("PLAYER_REGEN_ENABLED")
eventFrame:RegiserEvent("PLAYER_REGEN_DISABLED")
 
function MyAddOn:SetBindings()
    -- set your override bindings
end
 
function MyAddOn:ClearBindings()
    -- clear all overrides
end
 
function MyAddOn:PLAYER_LOGIN()
    self:SetBindings()
    eventFrame:UnregisterEvent("PLAYER_LOGIN")
end
 
function MyAddOn:PLAYER_REGEN_ENABLED()
    self:SetBindings()
end
 
function MyAddOn:PLAYER_REGEN_DISABLED()
    self:ClearBindings()
end