A 2 splash of fighter is better for PUGs while pure is better for highly skilled, well geared static groups. I prefer the fighter splash simply because he has improved sunder, stunning blow, toughness, and all other nice feats. The haste boost is also useful.
To argue that its a "useless splash" is pure opinion. I feel that the +3 strength you get from going pure is less dps than the 8 haste boosts I'm packing. I don't know how many times I'll be in ToD, VoD, eVoN, etc, where having 8 damage and 8 haste boosts is frigging amazing. It means I don't have to conserve them; I just let em fly as I will.
Ultimately, it doesn't matter. You still need a nanny bot regardless of if you're pure or splashed.