Just to bump this thread
Migrated from BT to Sky Fibre this week and finally lost G.INP (connected to ECI cabinet). Line started as interleaved when migrated on Monday, was removed early hours Wednesday morning.
A good run on G.INP/ECI, no doubt will be back to fastpath / interleaved / fastpath swings as used to see.
Still, this could just be temporary as City Fibre is allegedly coming to our area so 1Gbps full fibre is tempting (even if it is with Vodafone).