While both are great options we agree with Tribbletrouble44152k7 Trek - definitely depends on your space. We personally like swing or pivot doors - easier to clean, space efficient and easy to assemble if you are doing it DIY. Alternatively you could use a glass screen and do away with the door all together if that's possible? An example is below of our DIY shower screens, which you can also pick up with door kits: Hope this helps! Let us know what you decide.

we have an overhead rain shower and a separate hand shower (with adjustable water flow) one lever with diverter as we didn't want an exposed rail shower.... good quality Methven about $750? installed and we're quite happy with results

Anything is possible if you really want it, however every solution has a cost and without knowing you full circumstance its hard to tell. So heres a few examples of typical fixes to discuss with your designer: With the right 'scabble' (breaking of concrete) you can create a setdown deep enough to 'screed' (thin layer of concrete applied to the new void) to get the falls required for a kerbless shower but this will depend on the current total cover of concrete (if you break out too much it can compromise the structure). If your home is on a 'joist and bearer system' (timber or steel frame) you could 'comp up' (increase the strength) of the supporting 'members' (frame structure) to reduce their depth which will give you a lowered floor area, then a 'topping compound' (similar to screed) could be applied to the new set down to create the falls. Likewise changing the placement of the joists from 'stacked' to 'inline' could provide the same outcome without the need of comping up. We manage teams of consultants (architects, engineers, etc) and builders every day on projects in the interest of our Clients and find it pretty common theres a single solution focus. Remember you have engaged them to design your dream not the other way around! Always get what you pay for.

My walk in was well over a metre deep and width was a couple of metres to the wall. The glass screen was a metre and a bit so there was no splashing into the room. The shower came off the end wall same as the pic however it was one of those variable height showers on a rod, I have no doubt the shower in the pic will be splashing into the room which would drive me nuts. Mine looked great, so open, neat, big, except the floor hadn't been layed properly so instead of the water going toward the drain under the shower head it went all over the bathroom, nearly 3 metres out right down to the loo creating a massive puddle in front of the vanity as well. Getting it sorted with the builder was nightmare I eventually gave up and ended up having a low barrier installed from glass to wall. It still looked fine and stopped the problem but one really has to ensure the floor angle is done properly before embarking on the walk-in shower exercise.