They provide a welcome exclamation mark in the skyline.
However, nono is right – when(!) the Tara St. redevelopment goes ahead that block will be a bit obtrusive.
The block will be be a bit isolated – with much more low rise buildings surrounding it.
Perhaps the redevelopment of Hawkin’s House should be a bit more ambitious. The new roofline is an improvement but the whole building still remains stocky – maybe some sort of vertical axis would provide an echo of the Ulster Bank turrets.