Some great points in this thread, but just thought I'd add my two pence about the elevation gain. I took my Cupra PHEV to work yesterday on a 15 mile commute there and back. There is quite an elevation gain over the hills, but don't forget that the battery will regen quite notably as you go down the other side.
After 8 miles of my commute I was down to the mid-teens in terms of range, but then this increased by a couple of miles as I went down the hill. It used very little power and the battery was recharged by the motor, resulting in 57% of battery still being available by the time I'd completed 15 miles.
Going the other way, I'm now going back up the elevation gain and my range quickly drops from 18 miles to 4, with less than 5/6 or miles completed. However, once you start going back down the hill this increased and maintained for the rest of the journey. I finished with 6 miles of range and 17%.
Totally agree with software, mines two weeks old and came with 1900 but still has infotainment random crashes. It's booked in next week for an update.
Final point is cost, ultimately as others have said it comes down to your lifestyle and whether you can plug it in to charge overnight as to whether it's worth it. If you can't charge at home or get cheaper electric, a PHEV might not be the best car. I can (on Intelligent Octopus) and I have a commute less than 30 miles return, although you could manage with a commute of 60 miles if you can charge at work at a reasonable rate.
For comparison, in the 226 miles I've covered since owning the car, I've averaged 282.5mpg and 3.6mi/kWh.
226 / 3.6 = 62.7kWh at 7.5p = roughly £4.71. Throw on a bit extra for DC/AC conversion loss, and the less of a gallon of of fuel I've, used lets call it £10.00
A petrol at 40MPG, roughly 16p a mile = 226 * 0.16 = £36.16. So for me it's working and I should see at least a £50 reduction in cost of fuel throughout a month.
Public chargers can cost significantly more, so in my case of 3.6mi/kWh, once I hit above 57p a kWh (16p * 3.6mi/kWh) a 40mpg petrol is more economic. Most are around here are at least 45p, so I'll probably just stick to petrol if I can't charge it at home for whatever reason (which I guess is the benefit of a PHEV).
Whether that works for you and you can warrant the additional risk (more complicated/more to go wrong), the initial cost (PHEVs are typically expensive to buy) and potential maintenance costs (heavier so tires, but should be less on brakes), is something to way-up. Also don't forget as others have mentioned the range will look very different in winter.
Hope that helps and gives you some food for thought.
Any questions just ask.