The New Soho series Sketchbook take Watercolour and Ink wash quite well. I like the "tiny teeth" on the surface of the paper, as I sketched a lot with fountain pens. I have yet to try colour pencils.
The above sketch is done on location at Ann Siang Hill with Holbein Water Colour.
The Hereen at Orchard - sketched on location with Hero & Lamy pens
Tanjong Pager Road
Tras Street - sketched with Lamy pens and Calli Ink. The background Ink is Calli Gree Ink
ION at Orchard
Outside my apartment - Ink wash with Calli Green Ink
Devonshire Road - Sketched on location with Lamy pens & Calli Blue Ink
Changi City Point - Sketched on location with Lamy pens & Calli Blue Ink