Took about an hour and a half to build, plus longer for the painting. No bad for someone who has never built a card kit! Quite impressed with the kit though. Obviously it doesn't hold up to close inspection as well as plastic(card) due to the lack of texture, but they would be a good way to quickly assemble some background buildings on a large layout.
Although I don't wish to sound like I'm playing devil's advocate (well, not this time, anyway …), I suspect that some people might have a different take on this "texture" malarkey.
Just how much texture do you really want on a wall - how deep should the "grooves" be between bricks, stones etc.? My guess is "probably not as deep as many people think" - much of the texture on moulded plastic wall sections seems to be very exaggerated (and not always in the right places with some brands' versions of certain brick "bonds").
OK - in the case of plastic "brickwork" sections, the grooves might be deeper than they should be to allow for a couple of washes of different coloured paint to represent mortar - but, even then, some people might regard the depths involved with certain brands as excessive.
However, some people might point to another issue - if you mix card kits with certain makes of plastic building kits, the difference in depth of textures could be very noticeable - and this could destroy any illusion of a real scene in miniature.
I have, however, read about one exception to this - forced perspective - in which layout builders sometimes put large scale, highly detailed, models, with deep textures at the front of a layout - and small scale, less detailed, models, with "flat" textures at the back, to create an illusion of depth and distance to scenes.
Some companies (like Faller) have even been known to sell "background models", specifically designed like this, for this purpose - but I must admit that this is not something that I claim to know much about.
For me, this stuff falls into a similar category to having different light (intensity and colour) for the front and back scenes of layouts - I know that some people on this site have done stuff like this - but I've never done any of this stuff myself, so I wouldn't try to explain it.