Problems with Rough Riders

I'm a fan of Rough Riders which is why I'm currently converting a unit from Cadian's and Empire Knights. However I struggle to see how effective they will actually be on the table and after reading through the codex I'm wondering what GW were thinking when they equipped them.

For example, in the fluff it says that they use Lasgun's but they can't even take Lasgun's. They have the option of either a Laspistol or close combat weapon (CCW) to go with their Hunting Lance, not both. Why? Surely it would make sense that they would have a pistol or CCW holstered for use after the initial charge. It would also make them a little more effective because after the Lance has been used they are Initiative 3 with 2 attacks on the charge which is very poor. If they were a little more effective then maybe more people would use them.

Another problem now is that Hunting Lance are AP3 meaning they cannot reliably kill Terminators and other 2+ armour units. The Sergeant can take a Power Axe but will be using his Hunting Lance on the initial charge. It could be useful for finishing of a 2+ armour unit provided he is not challenged by a model with a higher Initiative.

Why would a Rough Rider exchange his Hunting Lance for a Special Weapon? Surely they could exchange their Laspistol or CCW.

And now in 6th Edition they can't charge from reserve and with only 5+ armour saves your relying on cover  and screening vehicles to get them where they need to be.

It's not all bad though. One advantage from the current FAQ is that they can now gain an extra attack from having a Lance and pistol/CCW as the sentence that said they could not has been removed and the lance is a 'melee' type weapon. Unfortunately, this will obviously only work for the first round of combat. Also, Mogul Kamir is now better due to the changes to the Rage and Fearless special rules.

I'll be taking them for a few games to see how they do. Also, it should be fun, and not too difficult, to convert them.

So does anyone use Rough Riders in 6th Editon? Are they worth it?