I just finished reading Seven Pillars of Wisdom. I mostly chose to pick it up because I had assumed the connection between what T.E. Lawrence wrote and Dune would be interesting. By and large it's a very slow read, with the entries almost being the equivalent of meditative journal entries on the events of WWI in the Arabian peninsula. Much of it is also play-by-play, including meals, quiet nights, as well as the more exciting adventures.
Overall the strong correlations to Dune seem to involve (a) the untapped energy and fighting spirit of the Bedouins (Fremen), and (b) the seemingly awe-inspiring leadership of T.E. Lawrence (Muad'dib). Now the parallels are not quite clean, because for instance the Bedouin were depicted as wild, unruly, chaotic, and very individualistic, which is a strong contrast with the well-ordered and disciplined Fremen. Lawrence also had a complex about being seen as a great leader while seeing himself as a liar and a fraud, so this is common to Paul's sense that by going along with the Fremen victory he was betraying the human race by putting the Atreides banner on the jihad. But on the other hand Paul seems to have desired to an extent to use his great abilities, despite knowing the long-term cost, while Lawrence was more of a fish out of water, a non-military agent serving as a de facto general (and having to keep actual generals at bay). So whereas Paul was bred for the role (like it or not), Lawrence was almost a hapless bystander who became a nexus for the entire Arab movement just because he was the only one to see the potential of the Arabs.
In short I'm not sure whether to recommend the book or not. I certainly don't regret it, but it's not quite what I had expected. Rather than a philosophical text sprung out of WWI, it's really a war-story that has passages of reflection peppered here and there. But if you like real-life adventure stories this is definitely one to pick up.