Does replacing template with namespace cause serious trouble for my code

If I have a code similar to this:

#include <iostream>

template<typename T>
class compare
{
public:
    bool comparison(T a,T b)
    {
        return (a>b);
    }

};

int main()
{

    int a=6,b=5;
    compare<int> cmp_i;
    std::cout<<cmp_i.comparison(a,b)<<std::endl;

    double c=7.0,d=7.5;
    compare<double> cmp_d;
    std::cout<<cmp_d.comparison(c,d)<<std::endl;

    return 0;
}

and since I am very inclined to remove template from my program I use namespaces to solve the problem:

main.cpp:

#include <iostream>

namespace int_space
{
    typedef int T;
    #include "base.hpp"
}

namespace double_space
{
    typedef double T;
    #include "base.hpp"
}

int main()
{

    int a=6,b=5;
    int_space::compare cmp_i;
    std::cout<<cmp_i.comparison(a,b)<<std::endl;

    double c=7.0,d=7.5;
    double_space::compare cmp_d;
    std::cout<<cmp_d.comparison(c,d)<<std::endl;

    return 0;
}

base.hpp:

class compare
{
public:
    bool comparison(T a,T b)
    {
        return (a>b);
    }
};

Both do the same thing but the second one does not use any template.

I wonder if this trick makes any serious problem for the future of my code when extending.