I listened to that extended version once. It was good, though a little long. The Mother guitar part was OK, but I didn't know what the hell sugar mice were. So I googled it, then YouTubed it. That lasted for about 30 seconds, which is about 27 seconds more than I can usually tolerate Marillion.
Probably my least favorite song off IaW, which is like ranking orgasms. Great song, worthy of praise and inclusion in setlists, with no added parts from other songs, thank you kindly.