Go for it!!!
DS1 was a clothbum. DS2 started out that way... then we moved when he was around six months old, around the same time as DS1 potty trained and the washing machine wasn't quite there and I couldn't be bothered... So he has been in disposables.
Then we discovered that DS3 was on the way and I rediscovered my nappy addiction.
DS2 has been back in cloth for about four months (he is two-and-a-half). He likes cloth nappies so much I don't think he will EVER be potty trained - he likes choosing them himself.
DS3 will, of course, be in cloth.
I have to say, in the years since DS1 was in nappies, the world of fluff has moved on a lot - there is a huge amount of choice out there and I think it is really fun trying out different nappies. I really would advise you to avoid buying loads of one type unless you are positive it is what you will want to use all the time. I prefer a bit of variety.
Have a look at the second hand boards too The Nappy Site, UK Parents Lounge, Mumsnet's own For Sale/Wanted board, The Used Nappy Company - you can get some real bargains but be aware that you can get some bum deals too.
I am VERY lazy so I am very fond of pocket-type and all-in-one nappies like BumGenius and Itti Bitti D'Lish for day time, though I also use two-parters (nappy plus wrap): Tots Bots Bamboozles, Motherease Sandy's, Ella's House... The ultimate wrap has got to be the Motherease Airflow but it is far from cute.
For nights it's got to be something super absorbent (I like Baby Beehinds birth to potty, and Ella's House Bumhuggers, others don't) plus boosters and a fleecy wrap - Stacinators are brilliant.