Ask HN: Developer workstation setup to promote startup culture?

We’re a new startup, about to bring developers on the payroll and have them work out of our new office space.

I’m interested to hear HN’ers views on how best to set up developer’s workstations to promote both the startup mentality we want and also for good productivity. Based on my years as a developer at both startups and BigCo’s (and now I’m the co-founder), my proposal is:

Developer is provided a brand new iMac and a second Dell screen connected and set 90 degrees in portrait mode (as seen at Pivotal Labs, and others). Dell screen for writing code and the iMac screen for seeing results in the browser (we’re a web app)

We want developers to work almost all of the time in the office at the early stage of the company so collaboration between the team can occur. This is the thought behind issueing iMacs over laptops. We also want to create a culture where the work iMac is for dev and you can bring your own laptop in and hook it to our network for your own stuff (email checking, IM’ing, checking your bank online, etc).

I would be interested to hear other’s views on laptop vs fixed computer to encourage work to take place in the office, and also the idea of being strict on having work dev machines ‘clean’ of personal apps and use by encouraging the developer to use their own equipment for personal use during work.

Thanks