The Dark Vengeance tactical squad is probably my ideal configuration. Put aside thoughts about point costs, min/max or in game value. I love plasma weapons. Period, end of story. My arch-nemesis HuronBH can attest to this, as I used to have an all plasma armed Ultramarines army that i ran - my fifth company.
I opted against modifying the models, mainly out of laziness, both in terms of the effort it would take to remove them, and in how much a pain in the butt it is to free hand the Disciples of Caliban chapter symbol.
The paint scheme I used was the same as for the other models in the chapter, substituting new GW paints where I have had to due to running out of P3 paints.
I'm a life long reader of sci-fi and fantasy; and have been painting and modelling for about 10 years. Interested in chatting about some of the other books I've read? Send me an email or drop me a line on Shelfari.